diff --git a/og.module b/og.module
index e6ebeae..0dfa3ae 100644
--- a/og.module
+++ b/og.module
@@ -522,7 +522,17 @@ function og_node_access($node, $op, $account) {
       // Set the "field mode" to default, before passing it to the
       // selection handler.
       $instance['field_mode'] = 'default';
-      if (entityreference_get_selection_handler($field, $instance)->getReferencableEntities()) {
+
+      if (module_exists('entityreference_prepopulate')) {
+        if ($ids = entityreference_prepopulate_get_values_from_url($field, $instance, TRUE)) {
+          foreach($ids as $gid) {
+            if(entityreference_get_selection_handler($field, $instance)->getReferencableEntities() && og_is_member('node', $gid, 'user', $account) && og_user_access('node', $gid, "$op $type content")) {
+              return NODE_ACCESS_ALLOW;
+            }
+          }
+        }
+      }
+      else if (entityreference_get_selection_handler($field, $instance)->getReferencableEntities()) {
         return NODE_ACCESS_ALLOW;
       }