1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/extensions/test/xpcshell/test_ext_webRequest_viewsource.js b/toolkit/components/extensions/test/xpcshell/test_ext_webRequest_viewsource.js
index 35b713e59b..5c59cbd924 100644
--- a/toolkit/components/extensions/test/xpcshell/test_ext_webRequest_viewsource.js
+++ b/toolkit/components/extensions/test/xpcshell/test_ext_webRequest_viewsource.js
@@ -51,7 +51,7 @@ add_task(async function test_webRequest_viewsource() {
     );
 
     browser.webRequest.onCompleted.addListener(
-      details => {
+      () => {
         // If cancel fails we get onCompleted.
         browser.test.fail("onCompleted received");
       },