diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index c7df77f1..ecddb04e 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -2359,6 +2359,8 @@ long long Room::GetGasInactiveTime()
     long long inactive_time = 0;
     if (IsPveRoom()) {
         inactive_time = 10;
+    } else if (GetCustomBattle()) {
+        inactive_time = 15;
     } else {
         if (IsPvpRankModeRoom()) {
             if (IsPvpMasterRankModeRoom()) {