diff --git a/libavutil/common.h b/libavutil/common.h
index 31142b9d253d53783cdfd8cbc8e94d51b6914691..bd92dda154dbd2d9f97b4d50ee7f47778e40b13a 100644
--- a/libavutil/common.h
+++ b/libavutil/common.h
@@ -386,7 +386,7 @@ tend= read_time();\
       tcount++;\
   }else\
       tskip_count++;\
-  if(256*256*256*64%(tcount+tskip_count)==0){\
+  if(((tcount+tskip_count)&(tcount+tskip_count-1))==0){\
       av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" dezicycles in %s, %d runs, %d skips\n", tsum*10/tcount, id, tcount, tskip_count);\
   }\
 }