diff --git a/loopback/locale/en.json b/loopback/locale/en.json
index 84c2bba4c..2d7db453f 100644
--- a/loopback/locale/en.json
+++ b/loopback/locale/en.json
@@ -39,5 +39,6 @@
 	"You can't create a ticket for a frozen client": "You can't create a ticket for a frozen client",
 	"can't be blank": "can't be blank",
 	"Street cannot be empty": "Street cannot be empty",
-	"City cannot be empty": "City cannot be empty"
+	"City cannot be empty": "City cannot be empty",
+	"EXTENSION_INVALID_FORMAT": "EXTENSION_INVALID_FORMAT"
 }
\ No newline at end of file