diff --git a/AlphaTwirl/Counter/GenericKeyComposerB.py b/AlphaTwirl/Counter/GenericKeyComposerB.py
index <HASH>..<HASH> 100755
--- a/AlphaTwirl/Counter/GenericKeyComposerB.py
+++ b/AlphaTwirl/Counter/GenericKeyComposerB.py
@@ -2,7 +2,7 @@
 
 ##____________________________________________________________________________||
 class GenericKeyComposerB(object):
-    """This class is a faster of GenericKeyComposer.
+    """This class is a faster version of GenericKeyComposer.
 
     This class can be used with BEvents.
update the docstring in GenericKeyComposerB