diff --git a/plugins/box/pages/pages.plugin.php b/plugins/box/pages/pages.plugin.php
index 19cf0b2..a15fd93 100644
--- a/plugins/box/pages/pages.plugin.php
+++ b/plugins/box/pages/pages.plugin.php
@@ -426,7 +426,16 @@
          *  
          */
         public static function robots() {
-            return (Pages::$page !== null) ? Pages::$page['robots_index'].', '.Pages::$page['robots_follow'] : '';
+
+            if (Pages::$page !== null) {
+                $_index  = (isset(Pages::$page['robots_index'])) ? Pages::$page['robots_index'] : '';
+                $_follow = (isset(Pages::$page['robots_follow'])) ? Pages::$page['robots_follow'] : '';
+                $robots  = ( ! empty($_index) && ! empty($_follow)) ? $_index.', '.$_follow : '';
+            } else {
+                $robots = '';
+            }
+
+            return $robots;
         }
 
     }
\ No newline at end of file