fixed minor prototype warning
diff --git a/programs/util.h b/programs/util.h
index d66e6bd..65eb195 100644
--- a/programs/util.h
+++ b/programs/util.h
@@ -217,7 +217,7 @@
 }
 
 
-UTIL_STATIC void UTIL_waitForNextTick()
+UTIL_STATIC void UTIL_waitForNextTick(void)
 {
     UTIL_time_t const clockStart = UTIL_getTime();
     UTIL_time_t clockEnd;