diff --git a/app/Utils/Selected.php b/app/Utils/Selected.php
index 5eaae74..0073e10 100644
--- a/app/Utils/Selected.php
+++ b/app/Utils/Selected.php
@@ -6,11 +6,11 @@ class Selected {
 
     static function selected($var, $ref) {
         $testPostsPage = explode('/', $ref);
-        if ($testPostsPage[1] === 'post') {
+        if (isset($testPostsPage[1]) && $testPostsPage[1] === 'post') {
             $ref = '/posts';
         }
         if ($var === $ref) {
             return 'active';
         }
     }
-}
+}
\ No newline at end of file