diff --git a/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.kt b/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.kt
new file mode 100644
index 00000000000..757941439be
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.kt
@@ -0,0 +1,19 @@
+// See KT-40327
+
+interface Foo {
+    fun some(x: Int = 1, y: Int)
+}
+
+interface Bar {
+    fun some(x: Int, y: Int = 2)
+}
+
+class Impl : Foo, Bar {
+    override fun some(x: Int, y: Int) {
+        // println("x = $x y = $y")
+    }
+}
+
+fun main() {
+    Impl().some()
+}
diff --git a/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.txt b/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.txt
new file mode 100644
index 00000000000..2a1d552b1bc
--- /dev/null
+++ b/compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.txt
@@ -0,0 +1,21 @@
+FILE: defaultParametersFromDifferentScopes.kt
+    public abstract interface Foo : R|kotlin/Any| {
+        public abstract fun some(x: R|kotlin/Int| = Int(1), y: R|kotlin/Int|): R|kotlin/Unit|
+
+    }
+    public abstract interface Bar : R|kotlin/Any| {
+        public abstract fun some(x: R|kotlin/Int|, y: R|kotlin/Int| = Int(2)): R|kotlin/Unit|
+
+    }
+    public final class Impl : R|Foo|, R|Bar| {
+        public constructor(): R|Impl| {
+            super<R|kotlin/Any|>()
+        }
+
+        public final override fun some(x: R|kotlin/Int|, y: R|kotlin/Int|): R|kotlin/Unit| {
+        }
+
+    }
+    public final fun main(): R|kotlin/Unit| {
+        R|/Impl.Impl|().R|/Impl.some|()
+    }
diff --git a/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java b/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java
index c761766f36e..df12354b1c9 100644
--- a/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsTestGenerated.java
@@ -1744,6 +1744,11 @@ public class FirDiagnosticsTestGenerated extends AbstractFirDiagnosticsTest {
             runTest("compiler/fir/analysis-tests/testData/resolve/problems/complexLambdaWithTypeVariableAsExpectedType.kt");
         }
 
+        @TestMetadata("defaultParametersFromDifferentScopes.kt")
+        public void testDefaultParametersFromDifferentScopes() throws Exception {
+            runTest("compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.kt");
+        }
+
         @TestMetadata("definitelyNotNullAndOriginalType.kt")
         public void testDefinitelyNotNullAndOriginalType() throws Exception {
             runTest("compiler/fir/analysis-tests/testData/resolve/problems/definitelyNotNullAndOriginalType.kt");
diff --git a/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java b/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java
index 9bde1c6ddb7..25bc3496228 100644
--- a/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java
+++ b/compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirDiagnosticsWithLightTreeTestGenerated.java
@@ -1744,6 +1744,11 @@ public class FirDiagnosticsWithLightTreeTestGenerated extends AbstractFirDiagnos
             runTest("compiler/fir/analysis-tests/testData/resolve/problems/complexLambdaWithTypeVariableAsExpectedType.kt");
         }
 
+        @TestMetadata("defaultParametersFromDifferentScopes.kt")
+        public void testDefaultParametersFromDifferentScopes() throws Exception {
+            runTest("compiler/fir/analysis-tests/testData/resolve/problems/defaultParametersFromDifferentScopes.kt");
+        }
+
         @TestMetadata("definitelyNotNullAndOriginalType.kt")
         public void testDefinitelyNotNullAndOriginalType() throws Exception {
             runTest("compiler/fir/analysis-tests/testData/resolve/problems/definitelyNotNullAndOriginalType.kt");