diff --git a/resource-1.0/abstract/Grammar.gf b/resource-1.0/abstract/Grammar.gf
index 97e66ffe2..a1edd59df 100644
--- a/resource-1.0/abstract/Grammar.gf
+++ b/resource-1.0/abstract/Grammar.gf
@@ -17,5 +17,6 @@ abstract Grammar =
   Phrase,
   Text,
   Structural,
-  Idiom
-  ** {} ;
+  Idiom ;
+
+