1 files changed, 2 insertions, 4 deletions
diff --git a/toolkit/mozapps/update/tests/unit_service_updater/marFileInUseSuccessCompleteSvc_win.js b/toolkit/mozapps/update/tests/unit_service_updater/marFileInUseSuccessCompleteSvc_win.js
index 4b946ac3e4..d1f938bb02 100644
--- a/toolkit/mozapps/update/tests/unit_service_updater/marFileInUseSuccessCompleteSvc_win.js
+++ b/toolkit/mozapps/update/tests/unit_service_updater/marFileInUseSuccessCompleteSvc_win.js
@@ -11,10 +11,8 @@ 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);
   runUpdate(STATE_SUCCEEDED, false, 0, true);
   await waitForHelperExit();
   await checkPostUpdateAppLog();