diff --git a/src/abstract/Common.gf b/src/abstract/Common.gf
index 0e7a57637..3e852978e 100644
--- a/src/abstract/Common.gf
+++ b/src/abstract/Common.gf
@@ -1,7 +1,7 @@
 --1 Common: Structures with Common Implementations.
 
--- This module defines the categories that uniformly have the
--- linearization type ${s:Str}$ in all languages. 
+-- This module defines the categories that uniformly have the same
+-- linearization type (usually ${s:Str}$) in all languages. 
 
 abstract Common = {