diff --git a/radio/src/targets/taranis/board_taranis.h b/radio/src/targets/taranis/board_taranis.h
index 0e068f897..5fd7d7bd6 100644
--- a/radio/src/targets/taranis/board_taranis.h
+++ b/radio/src/targets/taranis/board_taranis.h
@@ -143,8 +143,8 @@ void delay_01us(uint16_t nb);
 
 // Flash Write driver
 #define FLASH_PAGESIZE 256
-void unlockFlash();
-void lockFlash();
+void unlockFlash(void);
+void lockFlash(void);
 void writeFlash(uint32_t * address, uint32_t * buffer);
 uint32_t isFirmwareStart(const void * buffer);
 uint32_t isBootloaderStart(const void * buffer);