diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveClassesOrPackages/KotlinAwareDelegatingMoveDestination.kt b/idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveClassesOrPackages/KotlinAwareDelegatingMoveDestination.kt
index 63c655ba6b2..fdf66f2d424 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveClassesOrPackages/KotlinAwareDelegatingMoveDestination.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/move/moveClassesOrPackages/KotlinAwareDelegatingMoveDestination.kt
@@ -42,7 +42,7 @@ class KotlinAwareDelegatingMoveDestination(
     private val targetDirectory: PsiDirectory?
 ) : MoveDestination by delegate {
     override fun analyzeModuleConflicts(
-        elements: MutableCollection<PsiElement>,
+        elements: Collection<PsiElement>,
         conflicts: MultiMap<PsiElement, String>,
         usages: Array<out UsageInfo>
     ) {