diff --git a/EXE_Exchange.cpp b/EXE_Exchange.cpp
index 8a96040..a5c1b05 100644
--- a/EXE_Exchange.cpp
+++ b/EXE_Exchange.cpp
@@ -559,7 +559,7 @@ ExeExportSvg( int nId, const string& sFilePath, int nFilter)
 
 //-----------------------------------------------------------------------------
 bool
-ExeExportThreeJS( int nId, const string& sFilePath, const string& sFilePathM)
+ExeExportThreeJS( int nId, const string& sFilePath)
 {
    IEGrScene* pScene = GetCurrScene();
    VERIFY_SCENE(pScene, false) ;
@@ -571,7 +571,7 @@ ExeExportThreeJS( int nId, const string& sFilePath, const string& sFilePathM)
    PtrOwner<IExportThreeJS> pExpThreeJS( MyCreateExportThreeJS()) ;
    bOk = bOk && ! IsNull( pExpThreeJS) ;
    // eseguo l'esportazione
-   bOk = bOk && pExpThreeJS->Export( pGeomDB, nId, sFilePath, sFilePathM, pScene) ;
+   bOk = bOk && pExpThreeJS->Export( pGeomDB, nId, sFilePath, pScene) ;
    // se richiesto, salvo il comando Lua equivalente
    if ( IsCmdLog()) {
       string sLua = "EgtExportThreeJS(" + ToString( nId) + ",'" +
diff --git a/LUA_Exchange.cpp b/LUA_Exchange.cpp
index 70498b1..2016d1f 100644
--- a/LUA_Exchange.cpp
+++ b/LUA_Exchange.cpp
@@ -233,11 +233,9 @@ LuaExportThreeJS( lua_State* L)
    LuaCheckParam( L, 1, nGroupId)
    string sFilePath ;
    LuaCheckParam( L, 2, sFilePath)
-   string sFilePathM;
-   LuaCheckParam(L, 3, sFilePathM)
    LuaClearStack( L) ;
    // creo il file
-   bool bOk = ExeExportThreeJS( nGroupId, sFilePath, sFilePathM) ;
+   bool bOk = ExeExportThreeJS( nGroupId, sFilePath) ;
    // restituisco il risultato
    LuaSetParam( L, bOk) ;
    return 1 ;