diff --git a/Makefile b/Makefile
index 3aa8688..a712ca0 100644
--- a/Makefile
+++ b/Makefile
@@ -38,6 +38,7 @@ ENABLE_PWRON_PASSWORD            := 0
 ENABLE_RESET_AES_KEY             := 1
 ENABLE_BIG_FREQ                  := 0
 ENABLE_SMALL_BOLD                := 1
+# trim trailing 44B
 ENABLE_TRIM_TRAILING_ZEROS       := 1
 ENABLE_KEEP_MEM_NAME             := 1
 ENABLE_WIDE_RX                   := 1
diff --git a/firmware.bin b/firmware.bin
index 4e4640a..e61c4c7 100644
Binary files a/firmware.bin and b/firmware.bin differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
index 3b34ec2..e814809 100644
Binary files a/firmware.packed.bin and b/firmware.packed.bin differ
diff --git a/functions.c b/functions.c
index 159d94b..30907ff 100644
--- a/functions.c
+++ b/functions.c
@@ -272,9 +272,11 @@ void FUNCTION_Select(function_type_t Function)
 
 			if (!DTMF_Reply())
 			{
+			#ifdef ENABLE_MDC1200
 				if (g_current_vfo->mdc1200_mode == MDC1200_MODE_BOT || g_current_vfo->mdc1200_mode == MDC1200_MODE_BOTH)
 					BK4819_send_MDC1200(MDC1200_OP_CODE_PTT_ID, 0x80, g_eeprom.mdc1200_id);
 				else
+			#endif
 				if (g_current_vfo->dtmf_ptt_id_tx_mode == PTT_ID_APOLLO)
 					BK4819_PlayTone(APOLLO_TONE1_HZ, APOLLO_TONE_MS, 0);
 			}