diff --git a/uart.c b/uart.c
index 190d934..f0b4bc8 100644
--- a/uart.c
+++ b/uart.c
@@ -5,8 +5,6 @@
 #include <sys/stat.h>
 #include <unistd.h>
 
-#include <unistd.h>
-
 int _write(int file, char *ptr, int len);
 
 void usart_setup(void) {