diff --git a/source/reference/operator/not.txt b/source/reference/operator/not.txt
index aca4f9a03bb..ca99b585363 100644
--- a/source/reference/operator/not.txt
+++ b/source/reference/operator/not.txt
@@ -56,8 +56,9 @@ $not
      collection where the ``item`` field value does *not* start with
      the letter ``p``.
      
-     If using PyMongo's ``re.compile()``, you can write
-     the above query as:
+     If you are using Python, you can write the above query with the PyMongo
+     driver and the ``re.compile()`` method to compile a regular expression,
+     as follows:
   
      .. code-block:: python