diff --git a/SteamWareLib/user_std.cs b/SteamWareLib/user_std.cs
index 5443b84..317b54c 100644
--- a/SteamWareLib/user_std.cs
+++ b/SteamWareLib/user_std.cs
@@ -1234,11 +1234,11 @@ namespace SteamWare
         /// </summary>
         /// <param name="lemma"></param>
         /// <returns></returns>
-        public string Traduci(string lemma)
+        public string Traduci(string _lemma)
         {
-            // lemma � invariante... .ToUpper()!!!
-            lemma = lemma.ToUpper();
-            string answ = string.Format("_{0}_", lemma);
+            // lemma e' invariante... .ToUpper()!!!
+            string lemma = _lemma.ToUpper();
+            string answ = $"[[{lemma}]]";
             try
             {
                 if (string.IsNullOrEmpty(lingua))
@@ -1251,12 +1251,23 @@ namespace SteamWare
                 }
                 if (DataWrap.DW.vocabolarioOk)
                 {
-                    answ = DataWrap.DW.dictVocabolario[lingua + "#" + lemma];
+                    if (DataWrap.DW.dictVocabolario != null)
+                    {
+                        string key = $"{lingua }#{lemma}";
+                        if (DataWrap.DW.dictVocabolario.ContainsKey(key))
+                        {
+                            answ = DataWrap.DW.dictVocabolario[lingua + "#" + lemma];
+                        }
+                        else
+                        {
+                            logger.lg.scriviLog($"Lemma not found: {_lemma}", tipoLog.LEMMA);
+                        }
+                    }
                 }
             }
             catch (Exception exc)
             {
-                logger.lg.scriviLog(lemma, tipoLog.LEMMA);
+                logger.lg.scriviLog(_lemma, tipoLog.LEMMA);
                 // loggo risultato x voc
                 logger.lg.scriviLog($"Presenti {DataWrap.DW.numRecVoc} lemmi in vocabolario, richiesto lingua {lingua} | lemma {lemma}{Environment.NewLine}{exc}");
                 if (DataWrap.DW.numRecVoc > 4)
@@ -1275,7 +1286,7 @@ namespace SteamWare
             }
             if (currRunMode == runModes.echoLemmi)
             {
-                logger.lg.scriviLog(lemma, tipoLog.LEMMA);
+                logger.lg.scriviLog(_lemma, tipoLog.LEMMA);
             }
 
             return answ;