diff --git a/ba/ba0.cpp b/ba/ba0.cpp
index a19112391..f6c0a29bf 100755
--- a/ba/ba0.cpp
+++ b/ba/ba0.cpp
@@ -579,16 +579,12 @@ bool TMenu_application::menu(MENU_TAG)
         }
         else
         {         
-          /*        
-             const TString16 module(cmd2name(option));
-             if (!_ditta_asked && module.left(2) == "cg" && module.left(3) != "cg5")
-             _ditta_asked = ok = set_firm();
-             */       
-          prefix().set("DEF");                     // Aggiorna prefix
-          if (get_firm() == 0)
+          if (get_firm() == 0)                     // Chiede ditta se necessario
             set_firm();
+          prefix().set(NULL);                      // Chiude prefix
           TExternal_app a(option);
           a.run();
+          prefix().set("DEF");                     // Aggiorna prefix
         }
       }
     }