diff -r 96cdd2532034 Doc/library/math.rst
--- a/Doc/library/math.rst	Sun Nov 08 11:09:37 2015 +0000
+++ b/Doc/library/math.rst	Wed Dec 02 11:27:15 2015 +0530
@@ -46,8 +46,8 @@
 
 .. function:: factorial(x)
 
-   Return *x* factorial.  Raises :exc:`ValueError` if *x* is not integral or
-   is negative.
+   Return *x* factorial as an integer.  Raises :exc:`ValueError` if *x* is not 
+   integral or is negative.
 
 .. function:: floor(x)