diff --git a/extensions/lang-english/locale/validation.yml b/extensions/lang-english/locale/validation.yml
index 5a96c46c9..1b64c4741 100644
--- a/extensions/lang-english/locale/validation.yml
+++ b/extensions/lang-english/locale/validation.yml
@@ -90,6 +90,7 @@ validation:
   unique: "The :attribute has already been taken."
   uploaded: "The :attribute failed to upload."
   url: "The :attribute format is invalid."
+  uuid: "The :attribute must be a valid UUID."
 
   attributes:
     username: username