diff --git a/LUA_GdbModifySurf.cpp b/LUA_GdbModifySurf.cpp
index fd7c10e..bba6dff 100644
--- a/LUA_GdbModifySurf.cpp
+++ b/LUA_GdbModifySurf.cpp
@@ -176,7 +176,6 @@ LuaSurfFrEraseChunk( lua_State* L)
    LuaCheckParam( L, 2, nChunk)
    LuaClearStack( L) ;
   // eseguo l'offset della regione
-   int nNewId = GDB_ID_NULL ;
    bool bOk = ExeSurfFrEraseChunk( nId, nChunk) ;
    LuaSetParam( L, bOk) ;