diff --git a/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/refactoring/AbstractMultifileRefactoringTest.kt b/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/refactoring/AbstractMultifileRefactoringTest.kt
index 490e1862d90b..2e21b0c18f32 100644
--- a/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/refactoring/AbstractMultifileRefactoringTest.kt
+++ b/plugins/kotlin/idea/tests/test/org/jetbrains/kotlin/idea/refactoring/AbstractMultifileRefactoringTest.kt
@@ -99,10 +99,10 @@ fun runRefactoringTest(
 ) {
     val mainFilePath = config.getNullableString("mainFile") ?: config.getAsJsonArray("filesToMove").first().asString
 
-    val conflictFile = alternativeConflicts
+    val conflictFile = (alternativeConflicts
         ?.let { File(File(path).parentFile, alternativeConflicts) }?.takeIf { it.exists() }
         ?: File(File(path).parentFile, "conflicts.k2.txt").takeIf { KotlinPluginModeProvider.isK2Mode() && it.exists() }
-        ?: File(File(path).parentFile, "conflicts.txt")
+        ?: File(File(path).parentFile, "conflicts.txt")).normalize()
 
     val mainFile = rootDir.findFileByRelativePath(mainFilePath)!!
     val mainPsiFile = PsiManager.getInstance(project).findFile(mainFile)!!
@@ -121,7 +121,7 @@ fun runRefactoringTest(
     try {
         action.runRefactoring(rootDir, mainPsiFile, elementsAtCaret, config)
 
-        assert(!conflictFile.exists())
+        assert(!conflictFile.exists()) { "Conflict file $conflictFile should not exist" }
     } catch (e: BaseRefactoringProcessor.ConflictsInTestsException) {
         KotlinTestUtils.assertEqualsToFile(conflictFile, e.messages.sorted().joinToString("\n"))