diff --git a/pep-0561.rst b/pep-0561.rst
index 59cc6400e..289d28bc4 100644
--- a/pep-0561.rst
+++ b/pep-0561.rst
@@ -110,7 +110,7 @@ Distutils option example::
     setup(
         ...,
         package_data = {
-            foopkg': ['py.typed'],
+            'foopkg': ['py.typed'],
         },
         ...,
         )