1 files changed, 1 insertions, 1 deletions
diff --git a/browser/components/preferences/tests/browser_connection_bug388287.js b/browser/components/preferences/tests/browser_connection_bug388287.js
index d6f0c3c9d0..87d41a22c1 100644
--- a/browser/components/preferences/tests/browser_connection_bug388287.js
+++ b/browser/components/preferences/tests/browser_connection_bug388287.js
@@ -37,7 +37,7 @@ function test() {
    so it has to be opened as a sub dialog of the main pref tab.
    Open the main tab here.
    */
-  open_preferences(async function tabOpened(aContentWindow) {
+  open_preferences(async function tabOpened() {
     let dialog, dialogClosingPromise, dialogElement;
     let proxyTypePref, sharePref, httpPref, httpPortPref;