diff --git a/toolkit/components/ctypes/tests/unit/xpcshell.ini b/toolkit/components/ctypes/tests/unit/xpcshell.ini
index 50451571aec..0539bbacdbe 100644
--- a/toolkit/components/ctypes/tests/unit/xpcshell.ini
+++ b/toolkit/components/ctypes/tests/unit/xpcshell.ini
@@ -7,6 +7,8 @@ tail =
 [test_finalizer.js]
 [test_finalizer_shouldfail.js]
 [test_finalizer_shouldaccept.js]
+# Bug 751505: test fails consistently on a few platforms post CPG landing
+skip-if = true
 
 [test_jsctypes.js]
 # Bug 676989: test fails consistently on Android