diff --git a/docs/docsite/rst/dev_guide/developing_python_3.rst b/docs/docsite/rst/dev_guide/developing_python_3.rst
index 23b9541656b..a746d7156be 100644
--- a/docs/docsite/rst/dev_guide/developing_python_3.rst
+++ b/docs/docsite/rst/dev_guide/developing_python_3.rst
@@ -57,7 +57,7 @@ The best place to start learning about writing code that supports both Python 2
is `Lennart Regebro's book: Porting to Python 3 `_.
The book describes several strategies for porting to Python 3. The one we're
using is `to support Python 2 and Python 3 from a single code base
-`_
+`_
Understanding strings in Python 2 and Python 3
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