diff --git a/sites/all/modules/nodeaccess/nodeaccess.module b/sites/all/modules/nodeaccess/nodeaccess.module
index ded2502..6a2e198 100644
--- a/sites/all/modules/nodeaccess/nodeaccess.module
+++ b/sites/all/modules/nodeaccess/nodeaccess.module
@@ -88,7 +88,7 @@ function nodeaccess_access($op, $node, $account = NULL) {
   }
   $allowed_types = variable_get('nodeaccess-types', array());
   if ($op == 'grant') {
-    if ($node->nid && $allowed_types[$node->type] &&
+    if ($node->nid && array_key_exists($node->type, $allowed_types) &&
         (user_access('grant node permissions', $account) ||
          (user_access('grant editable node permissions', $account) && node_access('update', $node, $account)) ||
          (user_access('grant deletable node permissions', $account) && node_access('delete', $node, $account)) ||