1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/mozapps/extensions/test/xpcshell/rs-blocklist/test_gfxBlacklist_OSVersion_match.js b/toolkit/mozapps/extensions/test/xpcshell/rs-blocklist/test_gfxBlacklist_OSVersion_match.js
index 7a4ec276ee..d9d357be76 100644
--- a/toolkit/mozapps/extensions/test/xpcshell/rs-blocklist/test_gfxBlacklist_OSVersion_match.js
+++ b/toolkit/mozapps/extensions/test/xpcshell/rs-blocklist/test_gfxBlacklist_OSVersion_match.js
@@ -60,7 +60,7 @@ async function run_test() {
     do_test_finished();
   }
 
-  Services.obs.addObserver(function (aSubject, aTopic, aData) {
+  Services.obs.addObserver(function () {
     // If we wait until after we go through the event loop, gfxInfo is sure to
     // have processed the gfxItems event.
     executeSoon(checkBlacklist);