diff --git a/source/4/Installing_Updating_and_Removing_Software.rst b/source/4/Installing_Updating_and_Removing_Software.rst
index 5e7eb8d2..25e5f413 100644
--- a/source/4/Installing_Updating_and_Removing_Software.rst
+++ b/source/4/Installing_Updating_and_Removing_Software.rst
@@ -2,7 +2,7 @@
 Chapter 4 Installing, Updating, and Removing Software
 ********************************************************
 
-This chapter will teach you how to use GUI tools to install update and remove software and manage sources. 
+This chapter will teach you how to use GUI tools to install, update, and remove software and manage sources. 
 
 .. toctree::
   :maxdepth: 2