diff --git a/toolkit/mozapps/extensions/test/xpinstall/browser_auth2.js b/toolkit/mozapps/extensions/test/xpinstall/browser_auth2.js
index 12470717db72..d50ce941dcb0 100644
--- a/toolkit/mozapps/extensions/test/xpinstall/browser_auth2.js
+++ b/toolkit/mozapps/extensions/test/xpinstall/browser_auth2.js
@@ -3,6 +3,7 @@
 // credentials are given
 // This verifies bug 312473
 function test() {
+  requestLongerTimeout(2);
   Harness.authenticationCallback = get_auth_info;
   Harness.downloadFailedCallback = download_failed;
   Harness.installEndedCallback = install_ended;