diff --git a/include/recarray.cpp b/include/recarray.cpp
index 1e3386601..f7cf88f2d 100755
--- a/include/recarray.cpp
+++ b/include/recarray.cpp
@@ -38,11 +38,12 @@ void TRecord_array::set_key(TRectype* r)
     const RecDes* recd = r->rec_des();    // Descrizione del record della testata
     const KeyDes& kd = recd->Ky[0];       // Elenco dei campi della chiave 1
     // Copia tutti i campi chiave, tranne l'ultimo, in tutti i records
+    TString val;
     for (int i = kd.NkFields-2; i >= 0; i--)
     {                        
       const int nf = kd.FieldSeq[i] % MaxFields;
       const RecFieldDes& rf = recd->Fd[nf];  
-      const TString& val = r->get(rf.Name);
+      val = r->get(rf.Name);
       renum_key(rf.Name, val);
     }
   }