diff --git a/pep-0424.txt b/pep-0424.txt
index df086f27d..69c1bbaff 100644
--- a/pep-0424.txt
+++ b/pep-0424.txt
@@ -28,7 +28,7 @@ This PEP formally documents ``__length_hint__`` for other
 interpreters and non-standard-library Python modules to implement.
 
 ``__length_hint__`` must return an integer (else a TypeError is raised) or
-``NotImplemented, and is not required to be accurate. It may return a value
+``NotImplemented``, and is not required to be accurate. It may return a value
 that is either larger or smaller than the actual size of the container. A
 return value of ``NotImplemented`` indicates that there is no finite length
 estimate. It may not return a negative value (else a ValueError is raised).