diff --git a/radio/src/debug.h b/radio/src/debug.h
index da513ad70..bebb9eb58 100644
--- a/radio/src/debug.h
+++ b/radio/src/debug.h
@@ -40,6 +40,7 @@
 #include <inttypes.h>
 #include "rtc.h"
 #include "dump.h"
+#include "serial.h"
 #if defined(CLI)
 #include "cli.h"
 #endif