diff --git a/tmk_core/common/test/timer.c b/tmk_core/common/test/timer.c
index e21cd7d55..09ea91a89 100644
--- a/tmk_core/common/test/timer.c
+++ b/tmk_core/common/test/timer.c
@@ -16,6 +16,9 @@
 
 #include "timer.h"
 
+// TODO: the timer should work, but at a much faster rate than realtime
+// It should also have some kind of integration with the testing system
+
 void timer_init(void) {}
 
 void timer_clear(void) {}