diff --git a/src/game/Player.cpp b/src/game/Player.cpp
index f178bb3c7..c871be8d7 100644
--- a/src/game/Player.cpp
+++ b/src/game/Player.cpp
@@ -8830,7 +8830,7 @@ bool Player::IsBagPos( uint16 pos )
     return false;
 }
 
-bool Player::IsValidPos( uint8 bag, uint8 slot, bool explicit_pos )
+bool Player::IsValidPos( uint8 bag, uint8 slot, bool explicit_pos ) const
 {
     // post selected
     if(bag == NULL_BAG && !explicit_pos)
diff --git a/src/game/Player.h b/src/game/Player.h
index 0005e4dfb..75ab41367 100644
--- a/src/game/Player.h
+++ b/src/game/Player.h
@@ -1166,8 +1166,8 @@ class MANGOS_DLL_SPEC Player : public Unit
         static bool IsBagPos( uint16 pos );
         static bool IsBankPos( uint16 pos ) { return IsBankPos(pos >> 8, pos & 255); }
         static bool IsBankPos( uint8 bag, uint8 slot );
-        bool IsValidPos( uint16 pos, bool explicit_pos ) { return IsValidPos(pos >> 8, pos & 255, explicit_pos); }
-        bool IsValidPos( uint8 bag, uint8 slot, bool explicit_pos );
+        bool IsValidPos( uint16 pos, bool explicit_pos ) const { return IsValidPos(pos >> 8, pos & 255, explicit_pos); }
+        bool IsValidPos( uint8 bag, uint8 slot, bool explicit_pos ) const;
         uint8 GetBankBagSlotCount() const { return GetByteValue(PLAYER_BYTES_2, 2); }
         void SetBankBagSlotCount(uint8 count) { SetByteValue(PLAYER_BYTES_2, 2, count); }
         bool HasItemCount( uint32 item, uint32 count, bool inBankAlso = false ) const;
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 2c67ae7b3..c62e1273c 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 "9528"
+ #define REVISION_NR "9529"
 #endif // __REVISION_NR_H__