--- a/src/pyams_utils/tales.py	Fri Jul 06 09:47:39 2018 +0200
+++ b/src/pyams_utils/tales.py	Mon Jul 09 13:34:24 2018 +0200
@@ -97,7 +97,7 @@
 
 
 class ExtensionExpr(ContextExprMixin, StringExpr):
-    """extension: TALES expression
+    """tales: TALES expression
 
     This expression can be used to call a custom named adapter providing ITALESExtension interface.
     """