diff --git a/cg/cg2105.cpp b/cg/cg2105.cpp
index 87322b3ba..92afd7499 100755
--- a/cg/cg2105.cpp
+++ b/cg/cg2105.cpp
@@ -14,6 +14,7 @@
 #include <defmask.h>          // Serve per DLG_DELREC
 #include <msksheet.h>
 #include <relation.h>
+#include <utility.h>
 
 #include <causali.h>          // Archivio causali
 
@@ -615,6 +616,13 @@ void TNew_mask::init(char tipocf, bool fatt, bool edit)
   reset(P_NUMERO);
 #else  
   tipomov.disable();
+	TMask& cm = app().curr_mask();
+  if (ini_get_bool(CONFIG_DITTA, "cg", "RifMonth"))
+	{
+		const TDate datareg = cm.get_date(F_DATAREG);
+
+		set(P_NUMERO, format("%02d", datareg.month()));             
+	}
 #endif  
 
   enable(P_ANNO,   edit);