diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c
index 8ac788122..b2f45d117 100644
--- a/armsrc/mifaredesfire.c
+++ b/armsrc/mifaredesfire.c
@@ -609,6 +609,6 @@ void OnSuccess() {
 }
 
 void OnError(uint8_t reason) {
-    reply_old(CMD_ACK, 0, reason, 0, 0, 0);
+    reply_mix(CMD_ACK, 0, reason, 0, 0, 0);
     OnSuccess();
 }