diff --git a/AUTHORS.txt b/AUTHORS.txt
index e16c04c..e5b72ca 100644
--- a/AUTHORS.txt
+++ b/AUTHORS.txt
@@ -49,6 +49,7 @@ Mathias Rav (@Mortal) <rav@cs.au.dk>
 Daniel Fiterman (@dfit99) <fitermandaniel2@gmail.com>
 Simon Ruggier (@sruggier)
 Élie Gouzien (@ElieGouzien)
+Tim Gates (@timgates42) <tim.gates@iress.com>
 
 
 Note: (@user) means a github user name.
diff --git a/parso/python/tree.py b/parso/python/tree.py
index 85507f1..74ff15a 100644
--- a/parso/python/tree.py
+++ b/parso/python/tree.py
@@ -95,7 +95,7 @@ class DocstringMixin(object):
 
 class PythonMixin(object):
     """
-    Some Python specific utitilies.
+    Some Python specific utilities.
     """
     __slots__ = ()