diff --git a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java
index 8f35dc36f5d..e74434b7692 100644
--- a/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java
+++ b/analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java
@@ -19588,6 +19588,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                 runTest("compiler/testData/diagnostics/tests/java8Overrides/defaultVsAbstract.kt");
             }
 
+            @Test
+            @TestMetadata("falseManyImplementations.kt")
+            public void testFalseManyImplementations() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt");
+            }
+
             @Test
             @TestMetadata("hidingMethodOfAny.kt")
             public void testHidingMethodOfAny() throws Exception {
diff --git a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java
index d052d741567..d048c6191d7 100644
--- a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsTestGenerated.java
@@ -19588,6 +19588,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                 runTest("compiler/testData/diagnostics/tests/java8Overrides/defaultVsAbstract.kt");
             }
 
+            @Test
+            @TestMetadata("falseManyImplementations.kt")
+            public void testFalseManyImplementations() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt");
+            }
+
             @Test
             @TestMetadata("hidingMethodOfAny.kt")
             public void testHidingMethodOfAny() throws Exception {
diff --git a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java
index 5d97e7a6c07..29bd7499af0 100644
--- a/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirOldFrontendDiagnosticsWithLightTreeTestGenerated.java
@@ -19588,6 +19588,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                 runTest("compiler/testData/diagnostics/tests/java8Overrides/defaultVsAbstract.kt");
             }
 
+            @Test
+            @TestMetadata("falseManyImplementations.kt")
+            public void testFalseManyImplementations() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt");
+            }
+
             @Test
             @TestMetadata("hidingMethodOfAny.kt")
             public void testHidingMethodOfAny() throws Exception {
diff --git a/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.fir.kt b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.fir.kt
new file mode 100644
index 00000000000..082506b4c2b
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.fir.kt
@@ -0,0 +1,13 @@
+abstract class ClassEmpty {
+    abstract fun foo()
+}
+
+interface BaseEmpty {
+    fun foo()
+}
+
+interface BaseDefault {
+    fun foo() {}
+}
+
+abstract <!MANY_IMPL_MEMBER_NOT_IMPLEMENTED!>class ClassEmpty_BaseEmpty_BaseDefault<!> : ClassEmpty(), BaseEmpty, BaseDefault
diff --git a/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt
new file mode 100644
index 00000000000..f109502bcf3
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt
@@ -0,0 +1,13 @@
+abstract class ClassEmpty {
+    abstract fun foo()
+}
+
+interface BaseEmpty {
+    fun foo()
+}
+
+interface BaseDefault {
+    fun foo() {}
+}
+
+abstract class ClassEmpty_BaseEmpty_BaseDefault : ClassEmpty(), BaseEmpty, BaseDefault
diff --git a/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.txt b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.txt
new file mode 100644
index 00000000000..4562cb076da
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.txt
@@ -0,0 +1,31 @@
+package
+
+public interface BaseDefault {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open fun foo(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public interface BaseEmpty {
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public abstract class ClassEmpty {
+    public constructor ClassEmpty()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(): kotlin.Unit
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public abstract class ClassEmpty_BaseEmpty_BaseDefault : ClassEmpty, BaseEmpty, BaseDefault {
+    public constructor ClassEmpty_BaseEmpty_BaseDefault()
+    public open override /*3*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*3*/ /*fake_override*/ fun foo(): kotlin.Unit
+    public open override /*3*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*3*/ /*fake_override*/ fun toString(): kotlin.String
+}
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java
index 32941e22024..f0de560cc42 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java
@@ -19594,6 +19594,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                 runTest("compiler/testData/diagnostics/tests/java8Overrides/defaultVsAbstract.kt");
             }
 
+            @Test
+            @TestMetadata("falseManyImplementations.kt")
+            public void testFalseManyImplementations() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/java8Overrides/falseManyImplementations.kt");
+            }
+
             @Test
             @TestMetadata("hidingMethodOfAny.kt")
             public void testHidingMethodOfAny() throws Exception {