diff --git a/ci/ci0400.cpp b/ci/ci0400.cpp
index afb4219a8..60fc8db47 100755
--- a/ci/ci0400.cpp
+++ b/ci/ci0400.cpp
@@ -157,33 +157,35 @@ void TImmissioneDocumenti_mask::next_page(int p)
 	enable(DLG_DELREC, del_closed()[k]);
 }
 
-void TImmissioneDocumenti_mask::open_day_mask(TDate date)
+void TImmissioneDocumenti_mask::open_day_mask(conat TDate & date)
 {
-  if (!date.ok())
-		date = curr_almanac().selected_date();
+	TDate d(date);
+
+  if (!d.ok())
+		d = curr_almanac().selected_date();
   const int currpage = curr_page();
 	
 	const TString & codnum = filters().row(currpage);
   TString filter;
-  filter << "(ANSI(DATADOC)==\"" << date.string(ANSI) << "\")" <<  "&&" << "(CODNUM==\"" << codnum << "\")";
+  
+	filter << "(ANSI(DATADOC)==\"" << d.string(ANSI) << "\")" <<  "&&" << "(CODNUM==\"" << codnum << "\")";
 
   TRelation relation(LF_DOC);
   relation.add(LF_CLIFO, "TIPOCF==TIPOCF|CODCF==CODCF");
 
   TCursor cursor(&relation, filter);
-	if (!almanac().can_insert(date) && is_date_void(currpage, date))
+	
+	if (!almanac().can_insert(d) && is_date_void(currpage, d))
 		return;
-  TCursor_sheet sheet(&cursor, 
+  
+	TCursor_sheet sheet(&cursor, 
     "ANNO|CODNUM|TIPODOC|NUMDOCRIF|STATO|DATADOCRIF|NDOC|20->RAGSOC", 
     TR("Selezione documenti"), 
     HR("Anno|Num.|Tipo|Docum.Rif.|Stato|Data@10|Documento|Ragione Sociale@50"), 
     almanac().can_insert(date) ? 0x02|0x04 : 0x04, 3);
-	
 	TList_field& fl = sheet.add_list(101, 0, "Tipo documento ", 1, 1, 60);
 	TToken_string codes;
 	TToken_string values;
-
-	
 	TCodice_numerazione c(codnum);
   const int items = c.ntipi_doc();
 
diff --git a/ci/ci0400.h b/ci/ci0400.h
index 3d819567e..024cb7bce 100755
--- a/ci/ci0400.h
+++ b/ci/ci0400.h
@@ -58,7 +58,7 @@ public:
 
 public:
 // apertura del foglio interno di gestione dei documenti
-  virtual void open_day_mask(TDate date);
+  virtual void open_day_mask(const TDate & date);
 
 private:
 // chiamata del programma ve0
diff --git a/ci/cilib.cpp b/ci/cilib.cpp
index 587583297..9fb6b644d 100755
--- a/ci/cilib.cpp
+++ b/ci/cilib.cpp
@@ -312,6 +312,7 @@ bool TAlmanac_window::on_key(KEY key)
 		case K_DOWN:
 			o.move_selected_day(+7);
       break;
+		case K_SPACE:
 		case K_ENTER:
 			((TAlmanac_mask&)o.mask()).open_day_mask();
       break;
diff --git a/ci/cilib.h b/ci/cilib.h
index bba400fd1..6f8913d06 100755
--- a/ci/cilib.h
+++ b/ci/cilib.h
@@ -196,7 +196,7 @@ public:
   // @cmember Gestione eventi calendario: Controlla la presenza di documenti nella data attiva
   virtual void change_year(int newyear); 
   // @cmember Chiama la maschera o lo sheet legato al gioro  selezionato
-  virtual void open_day_mask(TDate date = botime) { }
+  virtual void open_day_mask(const TDate & date = botime) { }
 
   // @cmember Costruttore
   TAlmanac_mask(const char * name);