diff --git a/k3ng_keyer/keyer_pin_settings_opencwkeyer_mk2.h b/k3ng_keyer/keyer_pin_settings_opencwkeyer_mk2.h
index 720aa3b..4572712 100644
--- a/k3ng_keyer/keyer_pin_settings_opencwkeyer_mk2.h
+++ b/k3ng_keyer/keyer_pin_settings_opencwkeyer_mk2.h
@@ -6,7 +6,7 @@
 #define paddle_left 2
 #define paddle_right 6
 #define tx_key_line_1 11      // (high = key down/tx on)
-#define tx_key_line_2 13
+#define tx_key_line_2 0
 #define tx_key_line_3 0
 #define tx_key_line_4 0
 #define tx_key_line_5 0
@@ -14,7 +14,7 @@
 #define sidetone_line 4         // connect a speaker for sidetone
 #define potentiometer A0        // Speed potentiometer (0 to 5 V) Use pot from 1k to 10k
 #define ptt_tx_1 12              // PTT ("push to talk") lines
-#define ptt_tx_2 13             //   Can be used for keying fox transmitter, T/R switch, or keying slow boatanchors
+#define ptt_tx_2 0              //   Can be used for keying fox transmitter, T/R switch, or keying slow boatanchors
 #define ptt_tx_3 0              //   These are optional - set to 0 if unused
 #define ptt_tx_4 0
 #define ptt_tx_5 0