diff --git a/src/game/BattleGroundMgr.cpp b/src/game/BattleGroundMgr.cpp
index bf3f48c67..e8cdc90a1 100644
--- a/src/game/BattleGroundMgr.cpp
+++ b/src/game/BattleGroundMgr.cpp
@@ -1143,8 +1143,12 @@ void BattleGroundMgr::DeleteAllBattleGrounds()
     // will also delete template bgs:
     for(uint32 i = BATTLEGROUND_TYPE_NONE; i < MAX_BATTLEGROUND_TYPE_ID; ++i)
     {
-        for(BattleGroundSet::iterator itr = m_BattleGrounds[i].begin(); itr != m_BattleGrounds[i].end(); ++itr)
-            delete itr->second;
+        for(BattleGroundSet::iterator itr = m_BattleGrounds[i].begin(); itr != m_BattleGrounds[i].end();)
+        {
+            BattleGround * bg = itr->second;
+            ++itr;                                          // step from invalidate iterator pos in result element remove in ~BattleGround call
+            delete bg;
+        }
     }
 }
 
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 6236a986f..81b969836 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 "11485"
+ #define REVISION_NR "11486"
 #endif // __REVISION_NR_H__