diff --git a/firmware/basic/voltage.c b/firmware/basic/voltage.c
index 624cbf8..6af313f 100644
--- a/firmware/basic/voltage.c
+++ b/firmware/basic/voltage.c
@@ -1,6 +1,7 @@
 #include <sysinit.h>
 
 #include "basic/basic.h"
+#include "funk/nrf24l01p.h"
 
 uint32_t results=5000;