diff --git a/Overrides.md b/Overrides.md
index 54c04a4..d508bf2 100644
--- a/Overrides.md
+++ b/Overrides.md
@@ -99,7 +99,7 @@ user_pref("permissions.default.desktop-notification", 0);
 
 ## Possible error codes
 
-Only use these if absolutely needed.
+Only use these if absolutely needed. They should be uncommon in mainstream use.
 
 ***