diff --git a/source/firmware/kernel/application.c b/source/firmware/kernel/application.c
index 8a61d0d..9a27e4d 100644
--- a/source/firmware/kernel/application.c
+++ b/source/firmware/kernel/application.c
@@ -8,7 +8,6 @@
 #include <stdbool.h>
 #include <stddef.h>
 
-#include "board.h"
 #include "queue.h"
 #include "stack.h"
 #include "kernel.h"
@@ -17,6 +16,7 @@ static struct thread_context main_task;
 static stack_t main_stack[0xFF];
 
 extern void main(void *arg);
+extern void board_init(void);
 
 int start_application (int argc, char* argv[])
 {