diff --git a/widget/cocoa/OSXNotificationCenter.mm b/widget/cocoa/OSXNotificationCenter.mm
index af0c98e2244..3ada98a7bd1 100644
--- a/widget/cocoa/OSXNotificationCenter.mm
+++ b/widget/cocoa/OSXNotificationCenter.mm
@@ -248,7 +248,7 @@ OSXNotificationCenter::ShowAlertNotification(const nsAString & aImageUrl, const
   notification.hasActionButton = NO;
 
   // If this is not an application/extension alert, show additional actions dealing with permissions.
-  if (!nsContentUtils::IsSystemOrExpandedPrincipal(aPrincipal)
+  if (aPrincipal && !nsContentUtils::IsSystemOrExpandedPrincipal(aPrincipal)
       && !aPrincipal->GetIsNullPrincipal()) {
     nsCOMPtr<nsIStringBundleService> sbs = do_GetService(NS_STRINGBUNDLE_CONTRACTID);
     nsCOMPtr<nsIStringBundle> bundle;