diff --git a/modules/callbacks.inc b/modules/callbacks.inc
index dca9e1d..8ac00b2 100644
--- a/modules/callbacks.inc
+++ b/modules/callbacks.inc
@@ -611,10 +611,13 @@ function entity_metadata_field_file_validate_item($items, $context) {
  */
 function entity_metadata_no_hook_node_access($op, $node = NULL, $account = NULL) {
   if (isset($node)) {
-    // If a non-default revision is given, incorporate revision access.
-    $default_revision = node_load($node->nid);
-    if ($node->vid != $default_revision->vid) {
-      return _node_revision_access($node, $op);
+    // If node exist.
+    if (isset($node->nid)) {
+      // If a non-default revision is given, incorporate revision access.
+      $default_revision = node_load($node->nid);
+      if ($node->vid != $default_revision->vid) {
+        return _node_revision_access($node, $op);
+      }
     }
     else {
       return node_access($op, $node, $account);