diff --git a/cg/Attic/cg1400.cpp b/cg/Attic/cg1400.cpp
index 98c42008d..c64c7482c 100755
--- a/cg/Attic/cg1400.cpp
+++ b/cg/Attic/cg1400.cpp
@@ -328,7 +328,7 @@ bool TStampa_deleghe_IVA::print_deleghe()
 {
   bool ok = printer().open();
   bool arng = FALSE;
-  TForm f(_profilo, format("%05ld",_codice));
+  TForm f(_profilo, (_codice != 0) ? format("%05ld",_codice) : "");
 
   TCursor& cur = *f.cursor();
   TLocalisamfile& delega = cur.file();
diff --git a/cg/cg1400.cpp b/cg/cg1400.cpp
index 98c42008d..c64c7482c 100755
--- a/cg/cg1400.cpp
+++ b/cg/cg1400.cpp
@@ -328,7 +328,7 @@ bool TStampa_deleghe_IVA::print_deleghe()
 {
   bool ok = printer().open();
   bool arng = FALSE;
-  TForm f(_profilo, format("%05ld",_codice));
+  TForm f(_profilo, (_codice != 0) ? format("%05ld",_codice) : "");
 
   TCursor& cur = *f.cursor();
   TLocalisamfile& delega = cur.file();