diff --git a/docs/scenarios/speed.rst b/docs/scenarios/speed.rst
index 025352a..00aa5d5 100644
--- a/docs/scenarios/speed.rst
+++ b/docs/scenarios/speed.rst
@@ -64,6 +64,6 @@ Multiprocessing
 
 .. _`PyPy`: http://pypy.org
 .. _`The GIL`: http://wiki.python.org/moin/GlobalInterpreterLock
-.. _`Understanding GIL`: http://www.dabeaz.com/python/UnderstandingGIL.pdf
+.. _`guide`: http://www.dabeaz.com/python/UnderstandingGIL.pdf
 .. _`New GIL`: http://www.dabeaz.com/python/NewGIL.pdf
-.. _`Thread State`: http://docs.python.org/c-api/init.html#threads
\ No newline at end of file
+.. _`Special care`: http://docs.python.org/c-api/init.html#threads
\ No newline at end of file