diff --git a/metatag.install b/metatag.install
index e9cdd3d..780f033 100644
--- a/metatag.install
+++ b/metatag.install
@@ -210,7 +210,7 @@ function metatag_schema() {
  * Implements hook_install().
  */
 function metatag_install() {
-  drupal_set_message(t("Thank you for installing the Metatag module. It is recommended to read the module's <a href=\"!url\" title=\"Read the Metatag module's documentation\">README.txt</a> file as there are some known issues that may afffect this site.", array('!url' => url(drupal_get_path('module', 'metatag') . '/README.txt'))));
+  drupal_set_message(t("Thank you for installing the Metatag module. It is recommended to read the module's <a href=\"!url\" title=\"Read the Metatag module's documentation\">README.txt</a> file as there are some known issues that may affect this site.", array('!url' => url(drupal_get_path('module', 'metatag') . '/README.txt'))));
 }
 
 /**