1 files changed, 2 insertions, 2 deletions
diff --git a/browser/components/preferences/tests/browser_fluent.js b/browser/components/preferences/tests/browser_fluent.js
index db2daecc4f..ae83abecf0 100644
--- a/browser/components/preferences/tests/browser_fluent.js
+++ b/browser/components/preferences/tests/browser_fluent.js
@@ -1,7 +1,7 @@
 function whenMainPaneLoadedFinished() {
-  return new Promise(function (resolve, reject) {
+  return new Promise(function (resolve) {
     const topic = "main-pane-loaded";
-    Services.obs.addObserver(function observer(aSubject) {
+    Services.obs.addObserver(function observer() {
       Services.obs.removeObserver(observer, topic);
       resolve();
     }, topic);