diff --git a/doc/devel/coding_guide.rst b/doc/devel/coding_guide.rst
index cddb13539444..83cd15aaf848 100644
--- a/doc/devel/coding_guide.rst
+++ b/doc/devel/coding_guide.rst
@@ -45,7 +45,7 @@ When making a PR, pay attention to:
   on GitHub.
 * When updating your PR, instead of adding new commits to fix something, please
   consider amending your initial commit(s) to keep the history clean.
-  You can achieve this using
+  You can achieve this by using
 
   .. code-block:: bash
 
diff --git a/doc/devel/contributing.rst b/doc/devel/contributing.rst
index 2743424423d3..e38b2c3fbe0b 100644
--- a/doc/devel/contributing.rst
+++ b/doc/devel/contributing.rst
@@ -222,7 +222,7 @@ rules before submitting a pull request:
 
   or your editor may provide integration with it.  Note that Matplotlib
   intentionally does not use the black_ auto-formatter (1__), in particular due
-  to its unability to understand the semantics of mathematical expressions
+  to its inability to understand the semantics of mathematical expressions
   (2__, 3__).
 
   .. _PEP8: https://www.python.org/dev/peps/pep-0008/