1 files changed, 2 insertions, 4 deletions
diff --git a/toolkit/mozapps/update/tests/unit_base_updater/marFileInUseStageFailureComplete_win.js b/toolkit/mozapps/update/tests/unit_base_updater/marFileInUseStageFailureComplete_win.js
index b93b023934..11181f4420 100644
--- a/toolkit/mozapps/update/tests/unit_base_updater/marFileInUseStageFailureComplete_win.js
+++ b/toolkit/mozapps/update/tests/unit_base_updater/marFileInUseStageFailureComplete_win.js
@@ -15,10 +15,8 @@ async function run_test() {
   gTestFiles = gTestFilesCompleteSuccess;
   gTestDirs = gTestDirsCompleteSuccess;
   await setupUpdaterTest(FILE_COMPLETE_MAR, false);
-  await runHelperFileInUse(
-    gTestFiles[13].relPathDir + gTestFiles[13].fileName,
-    false
-  );
+  const testFile = getTestFileByName("0exe0.exe");
+  await runHelperFileInUse(testFile.relPathDir + testFile.fileName, false);
   await stageUpdate(STATE_AFTER_STAGE, true);
   checkPostUpdateRunningFile(false);
   checkFilesAfterUpdateSuccess(getStageDirFile, true);