diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index d6842e0..7d106fc 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -789,7 +789,7 @@
    f
    l
    o
-   g	
+   g
 
 Anything that can be done with generators can also be done with class based
 iterators as described in the previous section.  What makes generators so