diff --git a/seo_ui.module b/seo_ui.module
index aa245fd..506e592 100644
--- a/seo_ui.module
+++ b/seo_ui.module
@@ -194,7 +194,7 @@ function _seo_ui_alter_metatags(&$form, $form_state, $form_id) {
       // Remove the default submit handler since it fails after we alter the
       // form by moving metatags form around.  Add our own handler that does the
       // same as the original did.
-      if ($metasubmit = array_search('metatag_metatags_form_submit', $form['#submit'])) {
+      if (($metasubmit = array_search('metatag_metatags_form_submit', $form['#submit']))!==FALSE) {
         unset($form['#submit'][$metasubmit]);
         $form['#submit'][] = '_seo_ui_alter_metatags_submit';
       }