1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/mozapps/update/tests/unit_base_updater/marStageFailurePartial.js b/toolkit/mozapps/update/tests/unit_base_updater/marStageFailurePartial.js
index a1a0de0fe4..47c184e67b 100644
--- a/toolkit/mozapps/update/tests/unit_base_updater/marStageFailurePartial.js
+++ b/toolkit/mozapps/update/tests/unit_base_updater/marStageFailurePartial.js
@@ -11,7 +11,7 @@ async function run_test() {
   }
   const STATE_AFTER_STAGE = STATE_FAILED;
   gTestFiles = gTestFilesPartialSuccess;
-  gTestFiles[11].originalFile = "partial.png";
+  getTestFileByName("0exe0.exe").originalFile = "partial.png";
   gTestDirs = gTestDirsPartialSuccess;
   setTestFilesAndDirsForFailure();
   await setupUpdaterTest(FILE_PARTIAL_MAR, false);