diff --git a/ve/velib04.h b/ve/velib04.h
index 8accb30d3..0e199d165 100755
--- a/ve/velib04.h
+++ b/ve/velib04.h
@@ -616,7 +616,7 @@ protected:
   bool find_conti(const TRiga_documento& riga, TString_array& conti, int annoes, bool riclassifica_fdr_fde, const char tipomov, bool & pareggio);
 	void init();
 
-  const TCausale& doc2caus(const TDocumento& doc);
+  virtual const TCausale& doc2caus(const TDocumento& doc);
   const TCausale& rdoc2caus(const TRiga_documento& rdoc);
 
   void init_distrib(TString_array& conti, TGeneric_distrib& distrib, bool pareggio);
@@ -626,7 +626,7 @@ public:
   const long processed_docs() const { return _total_docs; }
   virtual bool elabora(TLista_documenti& doc_in, TLista_documenti& doc_out,
                        const TDate& data_elab, bool interattivo = false);
-  bool elabora(TDocumento& doc, long numreg_cg, TViswin* viswin, bool can_write, TAnal_mov& mov, 
+  virtual bool elabora(TDocumento& doc, long numreg_cg, TViswin* viswin, bool can_write, TAnal_mov& mov, 
                bool riclassifica_fdr_fde = true);
 
   TContabilizzazione_analitica(const char* cod = NULL);