Fix markup.
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 1c4793f..c372d7d 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -358,8 +358,8 @@
               n += 1
 
    .. versionadded:: 2.3
-   .. versionadded:: 2.6
-      The *start* parameter.
+   .. versionchanged:: 2.6
+      The *start* parameter was added.
 
 
 .. function:: eval(expression[, globals[, locals]])