1 files changed, 1 insertions, 2 deletions
diff --git a/toolkit/mozapps/update/tests/unit_base_updater/marWrongChannelStage.js b/toolkit/mozapps/update/tests/unit_base_updater/marWrongChannelStage.js
index 4d512fd12a..9aca22df66 100644
--- a/toolkit/mozapps/update/tests/unit_base_updater/marWrongChannelStage.js
+++ b/toolkit/mozapps/update/tests/unit_base_updater/marWrongChannelStage.js
@@ -15,8 +15,7 @@ async function run_test() {
   }
   const STATE_AFTER_STAGE = STATE_FAILED;
   gTestFiles = gTestFilesCompleteSuccess;
-  gTestFiles[gTestFiles.length - 2].originalContents =
-    UPDATE_SETTINGS_CONTENTS.replace("xpcshell-test", "wrong-channel");
+  setUpdateSettingsUseWrongChannel();
   gTestDirs = gTestDirsCompleteSuccess;
   setTestFilesAndDirsForFailure();
   await setupUpdaterTest(FILE_COMPLETE_MAR, false);