diff --git a/rigs/kenwood/r5000.c b/rigs/kenwood/r5000.c
index b386a32b5..ac9917219 100644
--- a/rigs/kenwood/r5000.c
+++ b/rigs/kenwood/r5000.c
@@ -74,7 +74,7 @@ const struct rig_caps r5000_caps =
     .serial_data_bits =  8,
     .serial_stop_bits =  2,
     .serial_parity =  RIG_PARITY_NONE,
-    .serial_handshake =  RIG_HANDSHAKE_HARDWARE,
+    .serial_handshake =  RIG_HANDSHAKE_NONE,
     .write_delay =  0,
     .post_write_delay =  2,
     .timeout =  400,
diff --git a/rigs/kenwood/ts440.c b/rigs/kenwood/ts440.c
index 205ee1f9c..fd77ee930 100644
--- a/rigs/kenwood/ts440.c
+++ b/rigs/kenwood/ts440.c
@@ -74,7 +74,7 @@ const struct rig_caps ts440_caps =
     .serial_data_bits =  8,
     .serial_stop_bits =  2,
     .serial_parity =  RIG_PARITY_NONE,
-    .serial_handshake =  RIG_HANDSHAKE_HARDWARE,
+    .serial_handshake =  RIG_HANDSHAKE_NONE,
     .write_delay =  20,
     .post_write_delay =  30,
     .timeout =  200,