--- a/toolkit/components/extensions/test/mochitest/mochitest-common.ini
+++ b/toolkit/components/extensions/test/mochitest/mochitest-common.ini
@@ -80,17 +80,17 @@ skip-if = os == 'android' # port.sender.
 [test_ext_sendmessage_doublereply.html]
 skip-if = os == 'android' # port.sender.tab is undefined on Android (bug 1258975).
 [test_ext_sendmessage_no_receiver.html]
 [test_ext_storage_content.html]
 [test_ext_storage_tab.html]
 skip-if = os == 'android' # Android does not currently support tabs.
 [test_ext_test.html]
 [test_ext_cookies.html]
-os == 'android' # Bug 1258975 on android.
+skip-if = os == 'android' # Bug 1258975 on android.
 [test_ext_background_api_injection.html]
 [test_ext_background_generated_url.html]
 [test_ext_background_teardown.html]
 [test_ext_tab_teardown.html]
 skip-if = (os == 'android') # Android does not support tabs API. Bug 1260250
 [test_ext_unload_frame.html]
 [test_ext_i18n.html]
 skip-if = (os == 'android') # Bug 1258975 on android.