diff --git a/server/gameserver/new_hero_agent.cc b/server/gameserver/new_hero_agent.cc
index 65327b56..7409ef7c 100644
--- a/server/gameserver/new_hero_agent.cc
+++ b/server/gameserver/new_hero_agent.cc
@@ -340,7 +340,8 @@ behaviac::EBTStatus HeroAgent::CoIdle(int min_val, int max_val)
     co->runing_cb =
         [this, context] ()
          {
-             if (GetRoom()->GetFrameNo() - context->frameno < context->time) {
+             if ((GetRoom()->GetFrameNo() - context->frameno) * FRAME_RATE_MS <
+                 context->time) {
                  return behaviac::BT_RUNNING;
              } else {
                  return behaviac::BT_SUCCESS;