diff --git a/Doc/Manual/Python.html b/Doc/Manual/Python.html
index 13b20d953..07f9e87d7 100644
--- a/Doc/Manual/Python.html
+++ b/Doc/Manual/Python.html
@@ -5305,7 +5305,8 @@ all overloaded functions share the same function in SWIG generated proxy class.
 </p>
 
 <p>
-For detailed usage of function annotation, see PEP 3107.
+For detailed usage of function annotation, see
+<a href="http://www.python.org/dev/peps/pep-3107/">PEP 3107</a>.
 </p>
 
 <H3><a name="Python_nn75"></a>33.12.2 Buffer interface</H3>