diff --git a/src/libu64/rcp_utils.c b/src/libu64/rcp_utils.c
index ef3d655e14..f3a6ae32cd 100644
--- a/src/libu64/rcp_utils.c
+++ b/src/libu64/rcp_utils.c
@@ -1,5 +1,7 @@
 #include "libu64/rcp_utils.h"
 #include "ultra64.h"
+#include "printf.h"
+
 #include "global.h"
 
 #if PLATFORM_N64 || DEBUG_FEATURES