diff --git a/eopayment/mollie.py b/eopayment/mollie.py
index e6fda58..1e6428b 100644
--- a/eopayment/mollie.py
+++ b/eopayment/mollie.py
@@ -98,7 +98,6 @@ class Payment(PaymentCommon):
             metadata['orderid'] = orderid
         if subject is not None:
             body['description'] = subject
-            body['subject'] = subject
 
         resp = self.call_endpoint('POST', 'payments', data=body)