diff --git a/modules/ppcp-api-client/src/Entity/Order.php b/modules/ppcp-api-client/src/Entity/Order.php
index ef1cba160..42a037a10 100644
--- a/modules/ppcp-api-client/src/Entity/Order.php
+++ b/modules/ppcp-api-client/src/Entity/Order.php
@@ -189,16 +189,6 @@ class Order {
 		return $this->application_context;
 	}
 
-	/**
-	 * Returns the payment source.
-	 *
-	 * @return PaymentSource|null
-	 */
-	public function payment_source() {
-
-		return $this->payment_source;
-	}
-
 	/**
 	 * Returns the object as array.
 	 *
@@ -228,9 +218,6 @@ class Order {
 		if ( $this->application_context() ) {
 			$order['application_context'] = $this->application_context()->to_array();
 		}
-		if ( $this->payment_source() ) {
-			$order['payment_source'] = $this->payment_source();
-		}
 
 		return $order;
 	}