diff --git a/myhdl/_always_comb.py b/myhdl/_always_comb.py
index 0c19901e..0f82bb1d 100644
--- a/myhdl/_always_comb.py
+++ b/myhdl/_always_comb.py
@@ -43,7 +43,7 @@ class Error(Exception):
         return msg
 
 class ArgumentError(Error):
-    """ always_comb argument should be a normal (non-generator) function"""
+    """ always_comb argument should be a classic function"""
     
 class NrOfArgsError(Error):
     """ always_comb argument should be a function without arguments"""