diff --git a/doc/install.txt b/doc/install.txt
index 8a4799271b8afd8df1318ce71d5d67c629dec2ac..f42db00b1de51963c354a76de1a23a579aff57e4 100644
--- a/doc/install.txt
+++ b/doc/install.txt
@@ -9,7 +9,7 @@ virtualenv, and xvfb or the Xorg dummy driver.
 
 Those dependencies can be installed by running the 'install-deps' script
 as root, which will install the needed packages. This script has been
-tested on Ubuntu, Debian, Fedora, Centos.
+tested on Ubuntu, Debian, Fedora, and Centos.
 
 After installing the required dependencies, a python virtualenv needs
 to be created with marionette. This can be with the 'setup-virtualenv'