diff --git a/idea/src/org/jetbrains/kotlin/idea/intentions/declarations/ConvertMemberToExtensionIntention.kt b/idea/src/org/jetbrains/kotlin/idea/intentions/declarations/ConvertMemberToExtensionIntention.kt
index 192208c853d..9e35ba579e1 100644
--- a/idea/src/org/jetbrains/kotlin/idea/intentions/declarations/ConvertMemberToExtensionIntention.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/intentions/declarations/ConvertMemberToExtensionIntention.kt
@@ -118,7 +118,7 @@ class ConvertMemberToExtensionIntention :
         val project = file.project
         val outermostParent = KtPsiUtil.getOutermostParent(element, file, false)
 
-        val ktFilesToAddImports = SmartList<KtFile>()
+        val ktFilesToAddImports = LinkedHashSet<KtFile>()
         val javaCallsToFix = SmartList<PsiMethodCallExpression>()
         for (ref in ReferencesSearch.search(element)) {
             when (ref) {