diff --git a/src/Merchant.php b/src/Merchant.php
index 92e707b..a98322d 100644
--- a/src/Merchant.php
+++ b/src/Merchant.php
@@ -32,7 +32,7 @@ public function getPaymentNo()
 
     public function getPaymentId()
     {
-        return (strpos($this->username,'@') === false ? $this->username : substr($this->username, 0, strpos($this->username)+1)) .'_'. $this->uniqId,
+        return (strpos($this->username,'@') === false ? $this->username : substr($this->username, 0, strpos($this->username)+1)) .'_'. $this->uniqId;
     }
 
     public function getBaggageFields()