diff --git a/src/game/DBCStructure.h b/src/game/DBCStructure.h
index 8fdb056f2..4b845fea2 100644
--- a/src/game/DBCStructure.h
+++ b/src/game/DBCStructure.h
@@ -1163,8 +1163,8 @@ struct MapDifficultyEntry
     uint32      Difficulty;                                 // 2 (for arenas: arena slot)
     //char*       areaTriggerText[16];                      // 3-18 text showed when transfer to map failed (missing requirements)
     //uint32      textFlags;                                // 19
-    uint32      resetTime;                                  // 20
-    uint32      maxPlayers;                                 // 21
+    uint32      resetTime;                                  // 20, in secs, 0 if no fixed reset time
+    uint32      maxPlayers;                                 // 21, some heroic versions have 0 when expected same amount as in normal version
     //char*       difficultyString;                         // 22
 };
 
@@ -1860,7 +1860,7 @@ struct MapDifficulty
     MapDifficulty() : resetTime(0), maxPlayers(0) {}
     MapDifficulty(uint32 _resetTime, uint32 _maxPlayers) : resetTime(_resetTime), maxPlayers(_maxPlayers) {}
 
-    uint32 resetTime;
+    uint32 resetTime;                                       // in secs, 0 if no fixed reset time
     uint32 maxPlayers;                                      // some heroic dungeons have 0 when expect same value as in normal dificulty case
 };
 
diff --git a/src/game/InstanceSaveMgr.cpp b/src/game/InstanceSaveMgr.cpp
index 4eacbe764..d703fc9f1 100644
--- a/src/game/InstanceSaveMgr.cpp
+++ b/src/game/InstanceSaveMgr.cpp
@@ -126,6 +126,19 @@ bool InstanceSave::UnloadIfEmpty()
 
 //== InstanceResetScheduler functions ======================
 
+uint32 InstanceResetScheduler::GetMaxResetTimFor(MapDifficulty const* mapDiff)
+{
+    if (!mapDiff || !mapDiff->resetTime)
+        return 0;
+
+    uint32 delay = uint32(mapDiff->resetTime / DAY * sWorld.getConfig(CONFIG_FLOAT_RATE_INSTANCE_RESET_TIME)) * DAY;
+
+    if (delay < DAY)                                        // the reset_delay must be at least one day
+        delay = DAY;
+
+    return delay;
+}
+
 void InstanceResetScheduler::LoadResetTimes()
 {
     time_t now = time(NULL);
@@ -229,11 +242,7 @@ void InstanceResetScheduler::LoadResetTimes()
         if (!mapDiff->resetTime)
             continue;
 
-        // the reset_delay must be at least one day
-        uint32 period =  uint32(mapDiff->resetTime / DAY * sWorld.getConfig(CONFIG_FLOAT_RATE_INSTANCE_RESET_TIME)) * DAY;
-        if (period < DAY)
-            period = DAY;
-
+        uint32 period = GetMaxResetTimFor(mapDiff);
         time_t t = GetResetTimeFor(mapid,difficulty);
         if(!t)
         {
@@ -637,7 +646,7 @@ void InstanceSaveManager::_ResetOrWarnAll(uint32 mapid, Difficulty difficulty, b
 
         // calculate the next reset time
         uint32 diff = sWorld.getConfig(CONFIG_UINT32_INSTANCE_RESET_TIME_HOUR) * HOUR;
-        uint32 period = mapDiff->resetTime * DAY;
+        uint32 period = InstanceResetScheduler::GetMaxResetTimFor(mapDiff);
         time_t next_reset = ((now + timeLeft + MINUTE) / DAY * DAY) + period + diff;
         // update it in the DB
         CharacterDatabase.PExecute("UPDATE instance_reset SET resettime = '"UI64FMTD"' WHERE mapid = '%d' AND difficulty = '%d'", (uint64)next_reset, mapid, difficulty);
diff --git a/src/game/InstanceSaveMgr.h b/src/game/InstanceSaveMgr.h
index 6b664bbf0..819535be3 100644
--- a/src/game/InstanceSaveMgr.h
+++ b/src/game/InstanceSaveMgr.h
@@ -161,6 +161,8 @@ class InstanceResetScheduler
             return itr != m_resetTimeByMapDifficulty.end() ? itr->second : 0;
         }
 
+        static uint32 GetMaxResetTimFor(MapDifficulty const* mapDiff);
+
     public:                                                 // modifiers
         void SetResetTimeFor(uint32 mapid, Difficulty d, time_t t)
         {
diff --git a/src/game/Map.cpp b/src/game/Map.cpp
index 662fa3746..76cbc24a3 100644
--- a/src/game/Map.cpp
+++ b/src/game/Map.cpp
@@ -996,8 +996,7 @@ uint32 Map::GetMaxPlayers() const
 
 uint32 Map::GetMaxResetDelay() const
 {
-    MapDifficulty const* mapDiff = GetMapDifficulty();
-    return mapDiff ? mapDiff->resetTime : 0;
+    return InstanceResetScheduler::GetMaxResetTimFor(GetMapDifficulty());
 }
 
 inline GridMap *Map::GetGrid(float x, float y)
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 0bbd40ad0..213d79dab 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "10383"
+ #define REVISION_NR "10384"
 #endif // __REVISION_NR_H__