diff --git a/cg/cg5500.cpp b/cg/cg5500.cpp
index 634fabd25..8ee39b5d4 100755
--- a/cg/cg5500.cpp
+++ b/cg/cg5500.cpp
@@ -249,8 +249,11 @@ const char* Visliq_app::link_handler(TMask& m,
   else if (st.find("Versamenti") != -1)                 
   { group = -4;  firstfoc = F_DELDATE;   } 
   
-  m.show(group);        
-  m.enable(group);  
+  m.show(group);
+  if ((group == -1 || group == -2) && app()._is_annual)
+    m.disable(group);
+  else
+    m.enable(group);  
   
   if (doubleclick) m.field(firstfoc).set_focus();
 
@@ -480,6 +483,8 @@ bool Visliq_app::vis_liq()
       
       set_firm(dtt);
       int month = m.get_int(_freqviva == "M" ? F_MONTHS : F_TRIMS);
+      if (month == 13) _is_annual = TRUE;
+      else _is_annual = FALSE;
       if (month == 0)
         vis_all();
       else
diff --git a/cg/cg5500.h b/cg/cg5500.h
index 85d20e2dd..0672edc29 100755
--- a/cg/cg5500.h
+++ b/cg/cg5500.h
@@ -40,6 +40,7 @@ class Visliq_app : public TApplication
   TArray        _vers_rows,   _liq_rows;
   TMask*        _mask;
   bool _from_one;
+  bool _is_annual;
 
   const char* itoname(int m);
   
@@ -114,3 +115,4 @@ public:
   virtual ~Visliq_app() {}
 };
 
+inline Visliq_app& app() { return (Visliq_app&) main_app(); }