--- flickr/flickr.admin.inc
+++ flickr/flickr.admin.inc
@@ -56,7 +56,7 @@
     $form['flickr_default_userid']['#disabled'] = TRUE;
     $form['flickr_default_userid']['#description'] .= t(" Disabled until a valid API Key is set.");
   }
-
+  $form['#submit'] = array('flickr_admin_settings_submit');
   return system_settings_form($form);
 }