diff --git a/tutorials/introductory/lifecycle.py b/tutorials/introductory/lifecycle.py
index 7b75e4239065..55270a667728 100644
--- a/tutorials/introductory/lifecycle.py
+++ b/tutorials/introductory/lifecycle.py
@@ -12,7 +12,7 @@
 
 .. note::
 
-    This tutorial is based off of
+    This tutorial is based on
     `this excellent blog post <http://pbpython.com/effective-matplotlib.html>`_
     by Chris Moffitt. It was transformed into this tutorial by Chris Holdgraf.