1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/mozapps/update/tests/unit_base_updater/marFailurePartial.js b/toolkit/mozapps/update/tests/unit_base_updater/marFailurePartial.js
index de8db067bc..379fb00a27 100644
--- a/toolkit/mozapps/update/tests/unit_base_updater/marFailurePartial.js
+++ b/toolkit/mozapps/update/tests/unit_base_updater/marFailurePartial.js
@@ -10,7 +10,7 @@ async function run_test() {
     return;
   }
   gTestFiles = gTestFilesPartialSuccess;
-  gTestFiles[11].originalFile = "partial.png";
+  getTestFileByName("0exe0.exe").originalFile = "partial.png";
   gTestDirs = gTestDirsPartialSuccess;
   setTestFilesAndDirsForFailure();
   await setupUpdaterTest(FILE_PARTIAL_MAR, false);