diff --git a/arch/arm/SAMD21/modules/usart_sync/usart_sync.c b/arch/arm/SAMD21/modules/usart_sync/usart_sync.c
deleted file mode 100644
index e69de29b..00000000
diff --git a/arch/arm/SAMD21/modules/usart_sync/usart_sync.h b/arch/arm/SAMD21/modules/usart_sync/usart_sync.h
deleted file mode 100644
index ea54ddd8..00000000
--- a/arch/arm/SAMD21/modules/usart_sync/usart_sync.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef _USART_SYNC_H_
-#define _USART_SYNC_H_
-
-
-typedef struct usart_sync_t
-{
-	
-}usart_sync_t;
-
-#endif