diff --git a/README.rst b/README.rst
index 61f38de..96605a5 100644
--- a/README.rst
+++ b/README.rst
@@ -95,7 +95,7 @@ You can set any duration as the shelf life of cached return values of a function
   def bar(arg1, arg2):
     return {'arg1': arg1, 'arg2': arg2}
     
-Now when a cached value matching the given arguments is found the time of its calculation is checked; if more than ``stale_after`` time has since passed the function will be run again for the same arguments and the new value will be cached and returned.
+Now when a cached value matching the given arguments is found the time of its calculation is checked; if more than ``stale_after`` time has since passed, the function will be run again for the same arguments and the new value will be cached and returned.
 
 This is usefull for lengthy calculation that depend on a dynamic data source.