diff --git a/src/PortAbstract.php b/src/PortAbstract.php
index be61c1d..647473e 100644
--- a/src/PortAbstract.php
+++ b/src/PortAbstract.php
@@ -106,6 +106,11 @@ function getLogTable()
         return $this->db->table($this->config->get('gateway.table') . '_logs');
     }
 
+    public function setFactorNumber($id)
+    {
+        return $this;
+    }
+
     /**
      * Get port id, $this->port
      *
diff --git a/src/Zarinpal/Zarinpal.php b/src/Zarinpal/Zarinpal.php
index 535a159..13e166a 100644
--- a/src/Zarinpal/Zarinpal.php
+++ b/src/Zarinpal/Zarinpal.php
@@ -60,10 +60,6 @@ class Zarinpal extends PortAbstract implements PortInterface
      */
     protected $mobileNumber;
 
-    public function setFactorNumber($id)
-    {
-        return $this;
-    }
 
     /**
      * Address of gate for redirect