diff --git a/src/x49gp_timer.h b/src/x49gp_timer.h
index 827a6cb..d02d969 100644
--- a/src/x49gp_timer.h
+++ b/src/x49gp_timer.h
@@ -4,9 +4,11 @@
 #ifndef _X49GP_TIMER_H
 #define _X49GP_TIMER_H 1
 
+#include <stdint.h>
 #include <time.h>
 
-#include "list.h"
+#  include "list.h"
+#include "x49gp_types.h"
 
 #define X49GP_TIMER_VIRTUAL 0
 #define X49GP_TIMER_REALTIME 1