diff --git a/pyguide.html b/pyguide.html
index 6987f2b..f026c92 100644
--- a/pyguide.html
+++ b/pyguide.html
@@ -1711,7 +1711,7 @@ No:  <span class="external"></span>def foo(a, b=FLAGS.my_thing):  # sys.argv has
 <span class="external"></span># in the array and the array size and then do binary search to
 <span class="external"></span># get the exact number.
 
-<span class="external"></span>if i &amp; (i-1) == 0:        # true iff i is a power of 2
+<span class="external"></span>if i &amp; (i-1) == 0:        # true if i is a power of 2
 <span class="external"></span>
 </PRE></DIV>