diff --git a/src/AntiBotLinks.php b/src/AntiBotLinks.php
index fcc25bc..ffd502a 100755
--- a/src/AntiBotLinks.php
+++ b/src/AntiBotLinks.php
@@ -93,7 +93,7 @@ public function validateAnswer(string $value): bool
             return false;
         }
 
-        return join('', $solution) === trim($value);
+        return $solution->join('') === trim($value);
     }
 
     /**