diff --git a/auth/cas/db/install.php b/auth/cas/db/install.php
index ca412b1f826..f97771c86dc 100644
--- a/auth/cas/db/install.php
+++ b/auth/cas/db/install.php
@@ -5,7 +5,7 @@ function xmldb_auth_cas_install() {
 
     // upgrade from 1.9.x, introducing version.php
 
-    // remove cached passowrds, we do not need them for this plugin
+    // remove cached passwords, we do not need them for this plugin
     $DB->set_field('user', 'password', 'not cached', array('auth'=>'cas'));
 
 }