diff --git a/rigs/kenwood/ts570.c b/rigs/kenwood/ts570.c
index f3efc3148..27260a914 100644
--- a/rigs/kenwood/ts570.c
+++ b/rigs/kenwood/ts570.c
@@ -1100,7 +1100,7 @@ struct rig_caps ts570d_caps =
     .serial_data_bits =  8,
     .serial_stop_bits =  1,
     .serial_parity =  RIG_PARITY_NONE,
-    .serial_handshake =  RIG_HANDSHAKE_NONE,
+    .serial_handshake =  RIG_HANDSHAKE_HARDWARE,
     .write_delay =  0,
     .post_write_delay =  30,
     .timeout = 500,