Merge with 3.5

1 files changed, 1 insertions, 1 deletions

diff --git a/Doc/extending/building.rst b/Doc/extending/building.rst
index 163179d683..6f1d23e708 100644
--- a/Doc/extending/building.rst
+++ b/Doc/extending/building.rst
@@ -81,7 +81,7 @@ In the :file:`setup.py`, all execution is performed by calling the ``setup``
 function. This takes a variable number of keyword arguments, of which the
 example above uses only a subset. Specifically, the example specifies
 meta-information to build packages, and it specifies the contents of the
-package.  Normally, a package will contain of addition modules, like Python
+package.  Normally, a package will contain addition modules, like Python
 source modules, documentation, subpackages, etc. Please refer to the distutils
 documentation in :ref:`distutils-index` to learn more about the features of
 distutils; this section explains building extension modules only.