diff --git a/src/fp/fp0400.cpp b/src/fp/fp0400.cpp
index c607e1eb2..b523790f1 100644
--- a/src/fp/fp0400.cpp
+++ b/src/fp/fp0400.cpp
@@ -68,8 +68,8 @@ protected:
 	// Tasto aggiorna: aggiorna cliente che non corrisponde.
 	bool	aggiorna_forn();
 	void	salva_for() const;
-  static void	clean_ini(const TString& filename);
-  static void	run_cg0(const TString& filename);
+  void	clean_ini(const TString& filename)  const;
+  void	run_cg0(const TString& filename)  const;
 	void	elenco_prots_sel(TString& string) const;
 
 	static vector<iva>& get_righe_iva(TToken_string& keys);
@@ -616,7 +616,7 @@ void TPassive_mask::salva_for() const
 	}
 }
 
-void TPassive_mask::clean_ini(const TString& filename)
+void TPassive_mask::clean_ini(const TString& filename) const
 {
 	static TString remove_string;
 #ifdef DBG
@@ -627,7 +627,7 @@ void TPassive_mask::clean_ini(const TString& filename)
 	remove_files(remove_string, false);
 }
 
-void TPassive_mask::run_cg0(const TString& filename)
+void TPassive_mask::run_cg0(const TString& filename) const
 {
 	static TString run_string;
 #ifdef DBG