diff --git a/dom/push/test/mochitest.ini b/dom/push/test/mochitest.ini
index e837db12145b..d0822b321946 100644
--- a/dom/push/test/mochitest.ini
+++ b/dom/push/test/mochitest.ini
@@ -11,6 +11,7 @@ support-files =
 
 [test_has_permissions.html]
 [test_permissions.html]
+skip-if = fission # bug 1575185
 [test_register.html]
 skip-if = os == "win" # Bug 1373346
 [test_register_key.html]