diff --git a/radio/src/opentx.cpp b/radio/src/opentx.cpp
index 0cd85be15d..3c1f7d3414 100644
--- a/radio/src/opentx.cpp
+++ b/radio/src/opentx.cpp
@@ -1571,8 +1571,9 @@ void opentxResume() {
 
   // removed to avoid the double warnings (throttle, switch, etc.)
   // opentxStart(OPENTX_START_NO_SPLASH | OPENTX_START_NO_CALIBRATION | OPENTX_START_NO_CHECKS);
-
+#if defined(AUDIO)
   referenceSystemAudioFiles();
+#endif
 
   if (!g_eeGeneral.unexpectedShutdown) {
     g_eeGeneral.unexpectedShutdown = 1;
diff --git a/radio/src/targets/flysky/board.h b/radio/src/targets/flysky/board.h
index d45a1ac19c..fd5042d509 100644
--- a/radio/src/targets/flysky/board.h
+++ b/radio/src/targets/flysky/board.h
@@ -429,10 +429,6 @@ extern volatile bool pendingTelemetryPollFrame;
 
 // Audio driver
 void initBuzzerTimer(void);
-void audioInit(void);
-void audioEnd(void);
-void dacStart(void);
-void dacStop(void);
 
 #define VOLUME_LEVEL_MAX  23
 #define VOLUME_LEVEL_DEF  12
@@ -441,15 +437,6 @@ void setScaledVolume(uint8_t volume);
 void setVolume(uint8_t volume);
 int32_t getVolume(void);
 #endif
-void audioConsumeCurrentBuffer();
-void setSampleRate(uint32_t frequency);
-void referenceSystemAudioFiles();
-#define audioDisableIrq()               __disable_irq()
-#define audioEnableIrq()                __enable_irq()
-
-// Haptic driver
-void hapticInit(void);
-void hapticOff(void);
 
 // Second serial port driver
 #if defined(AUX_SERIAL_GPIO)
@@ -463,7 +450,6 @@ void auxSerialSbusInit(void);
 void auxSerialStop(void);
 #endif
 
-// Aux2 serial port driver
 #if defined(FLYSKY_GIMBAL)
 #define AUX4_SERIAL
 #define AUX4_SERIAL_BAUDRATE FLYSKY_HALL_BAUDRATE // 921600
@@ -476,10 +462,6 @@ void flysky_gimbal_init();
 #endif
 
 #if defined(AUX3_SERIAL)
-// extern uint8_t aux2SerialMode;
-// #if defined __cplusplus
-// void aux2SerialSetup(unsigned int baudrate, bool dma, uint16_t length = USART_WordLength_8b, uint16_t parity = USART_Parity_No, uint16_t stop = USART_StopBits_1);
-// #endif
 void aux3SerialInit(void);
 void aux3SerialPutc(char c);
 #endif