diff --git a/doc/source/enhancingperf.rst b/doc/source/enhancingperf.rst
index a4db4b7c0d953..685a8690a53d5 100644
--- a/doc/source/enhancingperf.rst
+++ b/doc/source/enhancingperf.rst
@@ -95,7 +95,7 @@ Plain cython
 ~~~~~~~~~~~~
 
 First we're going to need to import the cython magic function to ipython (for
-cython versions >=0.21 you can use ``%load_ext Cython``):
+cython versions  < 0.21 you can use ``%load_ext cythonmagic``):
 
 .. ipython:: python
    :okwarning: