Index: docs/templates_python.txt
===================================================================
--- docs/templates_python.txt   (revision 7199)
+++ docs/templates_python.txt   (working copy)
@@ -629,7 +629,7 @@
 Once you've created that Python module, you'll just have to write a bit of
 Python code, depending on whether you're writing filters or tags.
 
-To be a valid tag library, the module contain a module-level variable named
+To be a valid tag library, the module must contain a module-level variable named
 ``register`` that is a ``template.Library`` instance, in which all the tags and
 filters are registered. So, near the top of your module, put the following::