diff --git a/idea/src/org/jetbrains/kotlin/idea/refactoring/kotlinRefactoringUtil.kt.193 b/idea/src/org/jetbrains/kotlin/idea/refactoring/kotlinRefactoringUtil.kt.193
index d7662ac0029..5573a7b799c 100644
--- a/idea/src/org/jetbrains/kotlin/idea/refactoring/kotlinRefactoringUtil.kt.193
+++ b/idea/src/org/jetbrains/kotlin/idea/refactoring/kotlinRefactoringUtil.kt.193
@@ -994,7 +994,7 @@ fun DialogWrapper.showWithTransaction() {
     TransactionGuard.submitTransaction(disposable, Runnable { show() })
 }
 
-fun PsiMethod.checkDeclarationConflict(name: String, conflicts: MultiMap<PsiElement, String>, callables: List<PsiElement>) {
+fun PsiMethod.checkDeclarationConflict(name: String, conflicts: MultiMap<PsiElement, String>, callables: Collection<PsiElement>) {
     containingClass
         ?.findMethodsByName(name, true)
         // as is necessary here: see KT-10386