diff --git a/radio/src/targets/horus/board.cpp b/radio/src/targets/horus/board.cpp
index 3a0484009..bedfc8ef3 100644
--- a/radio/src/targets/horus/board.cpp
+++ b/radio/src/targets/horus/board.cpp
@@ -104,7 +104,7 @@ void boardInit()
 
   __enable_irq();
 
-#if defined(DEBUG)
+#if defined(DEBUG) && defined(AUX_SERIAL)
   serialSetMode(SP_AUX1, UART_MODE_DEBUG);                // indicate AUX1 is used
   serialInit(SP_AUX1, UART_MODE_DEBUG);                   // early AUX1 init
 #endif
diff --git a/radio/src/targets/nv14/board.cpp b/radio/src/targets/nv14/board.cpp
index 79cd5e9ad..3258e2678 100644
--- a/radio/src/targets/nv14/board.cpp
+++ b/radio/src/targets/nv14/board.cpp
@@ -161,7 +161,7 @@ void boardInit()
   // detect NV14 vs EL18
   hardwareOptions.pcbrev = boardGetPcbRev();
 
-#if defined(DEBUG)
+#if defined(DEBUG) && defined(AUX_SERIAL)
   serialSetMode(SP_AUX1, UART_MODE_DEBUG);                // indicate AUX1 is used
   serialInit(SP_AUX1, UART_MODE_DEBUG);                   // early AUX1 init
 #endif
diff --git a/radio/src/targets/nv14/board.h b/radio/src/targets/nv14/board.h
index dbc9a9564..a86447cb2 100644
--- a/radio/src/targets/nv14/board.h
+++ b/radio/src/targets/nv14/board.h
@@ -242,7 +242,6 @@ void hapticOff();
 void hapticOn(uint32_t pwmPercent);
 
 // Second serial port driver
-//#define AUX_SERIAL
 #define DEBUG_BAUDRATE                  115200
 #define LUA_DEFAULT_BAUDRATE            115200
 
diff --git a/radio/src/targets/pl18/board.cpp b/radio/src/targets/pl18/board.cpp
index 0022c8104..dc64dbb29 100644
--- a/radio/src/targets/pl18/board.cpp
+++ b/radio/src/targets/pl18/board.cpp
@@ -128,7 +128,7 @@ void boardInit()
   __enable_irq();
 #endif
 
-#if defined(DEBUG)
+#if defined(DEBUG) && defined(AUX_SERIAL)
   serialSetMode(SP_AUX1, UART_MODE_DEBUG);                // indicate AUX1 is used
   serialInit(SP_AUX1, UART_MODE_DEBUG);                   // early AUX1 init
 #endif
diff --git a/radio/src/targets/pl18/board.h b/radio/src/targets/pl18/board.h
index 7809a5225..461c1f820 100644
--- a/radio/src/targets/pl18/board.h
+++ b/radio/src/targets/pl18/board.h
@@ -226,7 +226,6 @@ void hapticOff();
 void hapticOn(uint32_t pwmPercent);
 
 // Second serial port driver
-//#define AUX_SERIAL
 #define DEBUG_BAUDRATE                  115200
 #define LUA_DEFAULT_BAUDRATE            115200
 
diff --git a/radio/src/targets/taranis/board.cpp b/radio/src/targets/taranis/board.cpp
index 37fa2dc35..8f0b680e5 100644
--- a/radio/src/targets/taranis/board.cpp
+++ b/radio/src/targets/taranis/board.cpp
@@ -215,7 +215,7 @@ void boardInit()
   ws2812_update(&_led_timer);
 #endif
 
-#if defined(DEBUG)
+#if defined(DEBUG) && defined(AUX_SERIAL)
   serialSetMode(SP_AUX1, UART_MODE_DEBUG);                // indicate AUX1 is used
   serialInit(SP_AUX1, UART_MODE_DEBUG);                   // early AUX1 init
 #endif