diff --git a/lib/mercadopago.rb b/lib/mercadopago.rb
index 8d0a185..9946b23 100644
--- a/lib/mercadopago.rb
+++ b/lib/mercadopago.rb
@@ -94,7 +94,7 @@ def refund_payment(id)
 
 
 		refund_status = {}
-		@rest_client.post("/v1/payments/" + id + "/refunds". access_token, refund_status)
+		@rest_client.post("/v1/payments/" + id + "/refunds", access_token, refund_status)
 
 	end