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diff --git a/engines/sword25/util/lua_serialization_util.h b/engines/sword25/util/lua_serialization_util.h
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+++ b/engines/sword25/util/lua_serialization_util.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distri8buted in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef LUA_SERIALIZATION_UTIL_H
+#define LUA_SERIALIZATION_UTIL_H
+
+
+struct lua_State;
+
+#include "lua/lobject.h"
+
+typedef TValue *StkId;
+
+namespace Lua {
+
+void pushObject(lua_State *luaState, TValue *obj);
+void pushProto(lua_State *luaState, Proto *proto);
+void pushUpValue(lua_State *luaState, UpVal *upval);
+void pushString(lua_State *luaState, TString *str);
+StkId getObject(lua_State *luaState, int stackpos);
+
+} // End of namespace Lua
+
+#endif