diff --git a/include/platform/timer.h b/include/platform/timer.h
index 2a6e617..f2085c0 100644
--- a/include/platform/timer.h
+++ b/include/platform/timer.h
@@ -27,5 +27,9 @@
 
 status_t platform_set_periodic_timer(platform_timer_callback callback, void *arg, time_t interval);
 
+void mdelay(unsigned msecs);
+void udelay(unsigned usecs);
+
+
 #endif