diff --git a/mg/mglib01.cpp b/mg/mglib01.cpp
index a93ebf6c7..96df61b78 100755
--- a/mg/mglib01.cpp
+++ b/mg/mglib01.cpp
@@ -734,12 +734,11 @@ TString TCodice_livelli::build_tabcode(const TString & pc, const int levnum) con
 }
 
 
-const TString & TCodice_livelli::group_descr(const char * code, int levnum) const
+const TString & TCodice_livelli::group_descr(const char * packed_code, int levnum) const
 {
-  return _gruppi->decode(build_tabcode(code,levnum));
+  return _gruppi->decode(build_tabcode(packed_code,levnum));
 }
 
-
 void TCodice_livelli::set_sheetcolumn(TSheet_field &fld_righe,int field, int lev) const
 {
   if (enabled(lev))