diff --git a/extensions/cookie/test/unit/xpcshell.ini b/extensions/cookie/test/unit/xpcshell.ini
index a8c410fc642..dddb86842f9 100644
--- a/extensions/cookie/test/unit/xpcshell.ini
+++ b/extensions/cookie/test/unit/xpcshell.ini
@@ -10,6 +10,7 @@ skip-if = perwindowprivatebrowsing
 [test_cookies_async_failure.js]
 [test_cookies_persistence.js]
 [test_cookies_privatebrowsing.js]
+skip-if = perwindowprivatebrowsing
 [test_cookies_profile_close.js]
 [test_cookies_read.js]
 [test_cookies_sync_failure.js]