diff --git a/lemur/authorities/schemas.py b/lemur/authorities/schemas.py
index 220ad7ee..015b5cb9 100644
--- a/lemur/authorities/schemas.py
+++ b/lemur/authorities/schemas.py
@@ -60,7 +60,7 @@ class AuthorityInputSchema(LemurInputSchema):
     def validate_subca(self, data):
         if data['type'] == 'subca':
             if not data.get('parent'):
-                raise ValidationError("If generating a subca parent 'authority' must be specified.")
+                raise ValidationError("If generating a subca, parent 'authority' must be specified.")
 
     @pre_load
     def ensure_dates(self, data):