diff --git includes/actions.inc includes/actions.inc
index 3b990a3..39ee38f 100644
--- includes/actions.inc
+++ includes/actions.inc
@@ -320,7 +320,7 @@ function actions_synchronize($actions_in_code = array(), $delete_orphans = FALSE
   foreach ($actions_in_code as $callback => $array) {
     // Ignore configurable actions since their instances get put in
     // when the user adds the action.
-    if (!$array['configurable']) {
+    if (empty($array['configurable'])) {
       // If we already have an action ID for this action, no need to assign aid.
       if (array_key_exists($callback, $actions_in_db)) {
         unset($actions_in_db[$callback]);