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 267241e0de4..842b3080565 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
@@ -14059,6 +14059,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                     runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt49829.kt");
                 }
 
+                @Test
+                @TestMetadata("kt50989.kt")
+                public void testKt50989() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt");
+                }
+
                 @Test
                 @TestMetadata("labaledCall.kt")
                 public void testLabaledCall() 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 5cd58644395..8bfc2705fd2 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
@@ -14059,6 +14059,12 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirDiagnosti
                     runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt49829.kt");
                 }
 
+                @Test
+                @TestMetadata("kt50989.kt")
+                public void testKt50989() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt");
+                }
+
                 @Test
                 @TestMetadata("labaledCall.kt")
                 public void testLabaledCall() 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 373c14d4664..4673bccabad 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
@@ -14059,6 +14059,12 @@ public class FirOldFrontendDiagnosticsWithLightTreeTestGenerated extends Abstrac
                     runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt49829.kt");
                 }
 
+                @Test
+                @TestMetadata("kt50989.kt")
+                public void testKt50989() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt");
+                }
+
                 @Test
                 @TestMetadata("labaledCall.kt")
                 public void testLabaledCall() throws Exception {
diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ResolutionWithStubTypesChecker.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ResolutionWithStubTypesChecker.kt
index 16c478565b8..2b990ea4707 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ResolutionWithStubTypesChecker.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ResolutionWithStubTypesChecker.kt
@@ -76,8 +76,8 @@ class ResolutionWithStubTypesChecker(private val kotlinCallResolver: KotlinCallR
         val builderInferenceSession = lambda.builderInferenceSession as BuilderInferenceSession
         val stubVariablesSubstitutor = builderInferenceSession.getNotFixedToInferredTypesSubstitutor()
         val variablesForUsedStubTypes = builderInferenceSession.getUsedStubTypes().map { it.originalTypeVariable }
-        val typeVariablesSubstitutionMap = (builderInferenceSession.getCurrentSubstitutor() as NewTypeSubstitutorByConstructorMap).map
-            .filterKeys { it in variablesForUsedStubTypes }
+        val substitutor = builderInferenceSession.getCurrentSubstitutor() as? NewTypeSubstitutorByConstructorMap ?: return
+        val typeVariablesSubstitutionMap = substitutor.map.filterKeys { it in variablesForUsedStubTypes }
 
         val newReceiverArgument = receiverValue?.buildSubstitutedReceiverArgument(stubVariablesSubstitutor, context)
         val newArguments = valueArguments.replaceTypes(context, resolutionCallbacks) { _, type ->
diff --git a/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.fir.kt b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.fir.kt
new file mode 100644
index 00000000000..919ae8ad5af
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.fir.kt
@@ -0,0 +1,7 @@
+// WITH_STDLIB
+
+fun main() {
+    <!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>buildList<!> {
+        <!OVERLOAD_RESOLUTION_AMBIGUITY!>println<!>(get(0))
+    }
+}
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt
new file mode 100644
index 00000000000..580cf65c725
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt
@@ -0,0 +1,7 @@
+// WITH_STDLIB
+
+fun main() {
+    <!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>buildList<!> {
+        <!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE, OVERLOAD_RESOLUTION_AMBIGUITY!>println<!>(get(0))
+    }
+}
\ No newline at end of file
diff --git a/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.txt b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.txt
new file mode 100644
index 00000000000..a9fef69810f
--- /dev/null
+++ b/compiler/testData/diagnostics/tests/inference/builderInference/kt50989.txt
@@ -0,0 +1,3 @@
+package
+
+public fun main(): kotlin.Unit
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 ebc0987b6ac..6a3c9030a4c 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
@@ -14065,6 +14065,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
                     runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt49829.kt");
                 }
 
+                @Test
+                @TestMetadata("kt50989.kt")
+                public void testKt50989() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/inference/builderInference/kt50989.kt");
+                }
+
                 @Test
                 @TestMetadata("labaledCall.kt")
                 public void testLabaledCall() throws Exception {