diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFirTestdataTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFirTestdataTestGenerated.java
index 4e855d8a8ca..70844ec04eb 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFirTestdataTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosticCompilerTestFirTestdataTestGenerated.java
@@ -3152,6 +3152,18 @@ public class DiagnosticCompilerTestFirTestdataTestGenerated extends AbstractDiag
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invoke.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeCustomTypeExt.kt")
+                public void testInvokeCustomTypeExt() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeCustomTypeMember.kt")
+                public void testInvokeCustomTypeMember() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt");
+                }
+
                 @Test
                 @TestMetadata("invokeKFunction.kt")
                 public void testInvokeKFunction() throws Exception {
@@ -3170,6 +3182,30 @@ public class DiagnosticCompilerTestFirTestdataTestGenerated extends AbstractDiag
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeKSuspendFunction.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeOverload1.kt")
+                public void testInvokeOverload1() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeOverload2.kt")
+                public void testInvokeOverload2() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeSuspend.kt")
+                public void testInvokeSuspend() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeWithExtensionReceiver.kt")
+                public void testInvokeWithExtensionReceiver() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt");
+                }
+
                 @Test
                 @TestMetadata("lambda.kt")
                 public void testLambda() throws Exception {
diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated.java
index 0563bfa62e7..a916519201e 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated.java
@@ -3152,6 +3152,18 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invoke.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeCustomTypeExt.kt")
+                public void testInvokeCustomTypeExt() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeCustomTypeMember.kt")
+                public void testInvokeCustomTypeMember() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt");
+                }
+
                 @Test
                 @TestMetadata("invokeKFunction.kt")
                 public void testInvokeKFunction() throws Exception {
@@ -3170,6 +3182,30 @@ public class LLFirPreresolvedReversedDiagnosticCompilerFirTestDataTestGenerated
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeKSuspendFunction.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeOverload1.kt")
+                public void testInvokeOverload1() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeOverload2.kt")
+                public void testInvokeOverload2() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeSuspend.kt")
+                public void testInvokeSuspend() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeWithExtensionReceiver.kt")
+                public void testInvokeWithExtensionReceiver() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt");
+                }
+
                 @Test
                 @TestMetadata("lambda.kt")
                 public void testLambda() throws Exception {
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.fir.txt
new file mode 100644
index 00000000000..a9f2eb23b3a
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.fir.txt
@@ -0,0 +1,13 @@
+FILE: invokeCustomTypeExt.kt
+    public final class Foo : R|kotlin/Any| {
+        public constructor(): R|Foo| {
+            super<R|kotlin/Any|>()
+        }
+
+    }
+    public final operator fun R|Foo|.invoke(): R|kotlin/Unit| {
+    }
+    public final fun foo(): R|kotlin/Unit| {
+        lval x: R|Foo| = R|/Foo.Foo|()
+        R|<local>/x|.R|/invoke|()
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt
new file mode 100644
index 00000000000..de12a288549
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt
@@ -0,0 +1,9 @@
+class Foo
+
+operator fun Foo.invoke() {}
+
+fun foo() {
+    val <!UNUSED_VARIABLE!>x<!> = Foo()
+
+    x()
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.fir.txt
new file mode 100644
index 00000000000..9d8dabf52fd
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.fir.txt
@@ -0,0 +1,14 @@
+FILE: invokeCustomTypeMember.kt
+    public final class Foo : R|kotlin/Any| {
+        public constructor(): R|Foo| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final operator fun invoke(): R|kotlin/Unit| {
+        }
+
+    }
+    public final fun foo(): R|kotlin/Unit| {
+        lval x: R|Foo| = R|/Foo.Foo|()
+        R|<local>/x|.R|/Foo.invoke|()
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt
new file mode 100644
index 00000000000..2517cc38eb5
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt
@@ -0,0 +1,9 @@
+class Foo {
+    operator fun invoke() {}
+}
+
+fun foo() {
+    val <!UNUSED_VARIABLE!>x<!> = Foo()
+
+    x()
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.fir.txt
new file mode 100644
index 00000000000..42ea93400bc
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.fir.txt
@@ -0,0 +1,13 @@
+FILE: invokeOverload1.kt
+    public final fun foo(): R|kotlin/Unit| {
+        lval x: R|(kotlin/String) -> kotlin/Unit| = fun <anonymous>(s: R|kotlin/String|): R|kotlin/Unit| <inline=Unknown>  {
+        }
+
+        local final fun nested(): R|kotlin/Unit| {
+            lval x: R|(kotlin/Int) -> kotlin/Unit| = fun <anonymous>(i: R|kotlin/Int|): R|kotlin/Unit| <inline=Unknown>  {
+            }
+
+            R|<local>/x|.R|SubstitutionOverride<kotlin/Function1.invoke: R|kotlin/Unit|>|(String(hello))
+        }
+
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt
new file mode 100644
index 00000000000..4f5828ef156
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt
@@ -0,0 +1,9 @@
+fun foo() {
+    val x = fun(s: String) {}
+
+    fun nested() {
+        val <!UNUSED_VARIABLE!>x<!> = fun(i: Int) {}
+
+        x("hello")
+    }
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.fir.txt
new file mode 100644
index 00000000000..99ec2c50d04
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.fir.txt
@@ -0,0 +1,13 @@
+FILE: invokeOverload2.kt
+    public final fun foo(): R|kotlin/Unit| {
+        lval x: R|(kotlin/String) -> kotlin/Unit| = fun <anonymous>(s: R|kotlin/String|): R|kotlin/Unit| <inline=Unknown>  {
+        }
+
+        local final fun nested(): R|kotlin/Unit| {
+            lval x: R|(kotlin/Int) -> kotlin/Unit| = fun <anonymous>(i: R|kotlin/Int|): R|kotlin/Unit| <inline=Unknown>  {
+            }
+
+            R|<local>/x|.R|SubstitutionOverride<kotlin/Function1.invoke: R|kotlin/Unit|>|(Int(10))
+        }
+
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt
new file mode 100644
index 00000000000..09c7c40860d
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt
@@ -0,0 +1,9 @@
+fun foo() {
+    val x = fun(s: String) {}
+
+    fun nested() {
+        val <!UNUSED_VARIABLE!>x<!> = fun(i: Int) {}
+
+        x(10)
+    }
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.fir.txt
new file mode 100644
index 00000000000..dae04ac0aee
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.fir.txt
@@ -0,0 +1,5 @@
+FILE: invokeSuspend.kt
+    public final suspend fun foo(action: R|suspend () -> kotlin/Unit|): R|kotlin/Unit| {
+        lval x: R|suspend () -> kotlin/Unit| = R|<local>/action|
+        R|<local>/x|.R|SubstitutionOverride<kotlin/coroutines/SuspendFunction0.invoke: R|kotlin/Unit|>|()
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt
new file mode 100644
index 00000000000..96949baebaf
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt
@@ -0,0 +1,5 @@
+suspend fun foo(action: suspend () -> Unit) {
+    val <!UNUSED_VARIABLE!>x<!> = action
+
+    x()
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.fir.txt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.fir.txt
new file mode 100644
index 00000000000..a81c967cdc6
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.fir.txt
@@ -0,0 +1,7 @@
+FILE: invokeWithExtensionReceiver.kt
+    public final fun foo(): R|kotlin/Unit| {
+        lval ext: R|kotlin/String.(kotlin/Int) -> kotlin/Unit|
+        lval usedReceiver: R|kotlin/String| = String(foo)
+        lval unusedReceiver: R|kotlin/String| = String(bar)
+        R|<local>/ext|.R|SubstitutionOverride<kotlin/Function2.invoke: R|kotlin/Unit|>|(R|<local>/usedReceiver|, Int(10))
+    }
diff --git a/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt
new file mode 100644
index 00000000000..5ce6457925e
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt
@@ -0,0 +1,9 @@
+fun foo() {
+    val ext: String.(Int) -> Unit
+
+    val usedReceiver = "foo"
+
+    val <!UNUSED_VARIABLE!>unusedReceiver<!> = "bar"
+
+    usedReceiver.ext(10)
+}
diff --git a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeDiagnosticsTestGenerated.java b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeDiagnosticsTestGenerated.java
index dd5b7a22222..a5316569d76 100644
--- a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeDiagnosticsTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeDiagnosticsTestGenerated.java
@@ -3152,6 +3152,18 @@ public class FirLightTreeDiagnosticsTestGenerated extends AbstractFirLightTreeDi
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invoke.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeCustomTypeExt.kt")
+                public void testInvokeCustomTypeExt() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeCustomTypeMember.kt")
+                public void testInvokeCustomTypeMember() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt");
+                }
+
                 @Test
                 @TestMetadata("invokeKFunction.kt")
                 public void testInvokeKFunction() throws Exception {
@@ -3170,6 +3182,30 @@ public class FirLightTreeDiagnosticsTestGenerated extends AbstractFirLightTreeDi
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeKSuspendFunction.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeOverload1.kt")
+                public void testInvokeOverload1() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeOverload2.kt")
+                public void testInvokeOverload2() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeSuspend.kt")
+                public void testInvokeSuspend() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeWithExtensionReceiver.kt")
+                public void testInvokeWithExtensionReceiver() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt");
+                }
+
                 @Test
                 @TestMetadata("lambda.kt")
                 public void testLambda() throws Exception {
diff --git a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiDiagnosticTestGenerated.java b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiDiagnosticTestGenerated.java
index 7bfa74063f7..827dbc7b549 100644
--- a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiDiagnosticTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiDiagnosticTestGenerated.java
@@ -3152,6 +3152,18 @@ public class FirPsiDiagnosticTestGenerated extends AbstractFirPsiDiagnosticTest
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invoke.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeCustomTypeExt.kt")
+                public void testInvokeCustomTypeExt() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeExt.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeCustomTypeMember.kt")
+                public void testInvokeCustomTypeMember() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeCustomTypeMember.kt");
+                }
+
                 @Test
                 @TestMetadata("invokeKFunction.kt")
                 public void testInvokeKFunction() throws Exception {
@@ -3170,6 +3182,30 @@ public class FirPsiDiagnosticTestGenerated extends AbstractFirPsiDiagnosticTest
                     runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeKSuspendFunction.kt");
                 }
 
+                @Test
+                @TestMetadata("invokeOverload1.kt")
+                public void testInvokeOverload1() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload1.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeOverload2.kt")
+                public void testInvokeOverload2() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeOverload2.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeSuspend.kt")
+                public void testInvokeSuspend() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeSuspend.kt");
+                }
+
+                @Test
+                @TestMetadata("invokeWithExtensionReceiver.kt")
+                public void testInvokeWithExtensionReceiver() throws Exception {
+                    runTest("compiler/fir/analysis-tests/testData/resolve/extendedCheckers/unused/invokeWithExtensionReceiver.kt");
+                }
+
                 @Test
                 @TestMetadata("lambda.kt")
                 public void testLambda() throws Exception {