builtin -> built-in.
diff --git a/Doc/reference/executionmodel.rst b/Doc/reference/executionmodel.rst
index 9690a93..57a2205 100644
--- a/Doc/reference/executionmodel.rst
+++ b/Doc/reference/executionmodel.rst
@@ -112,9 +112,9 @@
 If the global statement occurs within a block, all uses of the name specified in
 the statement refer to the binding of that name in the top-level namespace.
 Names are resolved in the top-level namespace by searching the global namespace,
-i.e. the namespace of the module containing the code block, and the builtin
+i.e. the namespace of the module containing the code block, and the builtins
 namespace, the namespace of the module :mod:`__builtin__`.  The global namespace
-is searched first.  If the name is not found there, the builtin namespace is
+is searched first.  If the name is not found there, the builtins namespace is
 searched.  The global statement must precede all uses of the name.
 
 .. index:: pair: restricted; execution