diff --git a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorContext.kt b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorContext.kt
index d8a5263b531..703e506eeb5 100644
--- a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorContext.kt
+++ b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/GeneratorContext.kt
@@ -32,7 +32,7 @@ class GeneratorContext(
     val constantValueGenerator: ConstantValueGenerator,
     override val irBuiltIns: IrBuiltIns
 ) : IrGeneratorContext {
-    val callToSubstitutedDescriptorMap = mutableMapOf<IrDeclarationReference, CallableDescriptor>()
+    internal val callToSubstitutedDescriptorMap = mutableMapOf<IrDeclarationReference, CallableDescriptor>()
 
     val sourceManager = PsiSourceManager()
 
diff --git a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ModuleGenerator.kt b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ModuleGenerator.kt
index 45879220811..cd44ab7cf33 100644
--- a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ModuleGenerator.kt
+++ b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ModuleGenerator.kt
@@ -90,7 +90,10 @@ class ModuleGenerator(
         }
 
         irFile.acceptChildrenVoid(IrSyntheticDeclarationGenerator(context))
+
         insertImplicitCasts(irFile, context)
+        context.callToSubstitutedDescriptorMap.clear()
+
         irFile.acceptVoid(AnnotationGenerator(context))
 
         irFile.patchDeclarationParents()