diff --git a/src/server/game/Entities/Object/Object.cpp b/src/server/game/Entities/Object/Object.cpp
index 239e6a8d82..0f5d08877a 100755
--- a/src/server/game/Entities/Object/Object.cpp
+++ b/src/server/game/Entities/Object/Object.cpp
@@ -122,7 +122,7 @@ void Object::_InitValues()
     memset(m_uint32Values, 0, m_valuesCount*sizeof(uint32));
 
     _changedFields = new bool[m_valuesCount];
-    memset(_changedFields, 0, sizeof(_changedFields));
+    memset(_changedFields, 0, m_valuesCount*sizeof(bool));
 
     m_objectUpdated = false;
 }