diff --git a/eopayment/systempayv2.py b/eopayment/systempayv2.py
index 07c360a..421e3e2 100644
--- a/eopayment/systempayv2.py
+++ b/eopayment/systempayv2.py
@@ -30,7 +30,6 @@ VADS_AMOUNT = 'vads_amount'
 VADS_SITE_ID = 'vads_site_id'
 VADS_TRANS_ID = 'vads_trans_id'
 SIGNATURE = 'signature'
-VADS_TRANS_ID = 'vads_trans_id'
 VADS_CTX_MODE = 'vads_ctx_mode'