diff --git a/js/guimanagerNik.js b/js/guimanagerNik.js
index 77a989f..171bf7a 100644
--- a/js/guimanagerNik.js
+++ b/js/guimanagerNik.js
@@ -516,9 +516,9 @@ $(document).ready(function() {
 		var clausolaquery = $("#searchValue").val()
 		filtro['query'] = clausolaquery.trim();
 
-// eventualmente le 2 seguenti non funzionano Nicola
-//		checkedField = $('#lemma_forma').val();
-//		filtro['lemma_forma'] = checkedField
+		// eventualmente le 2 seguenti non funzionano Nicola
+		//		checkedField = $('#lemma_forma').val();
+		//		filtro['lemma_forma'] = checkedField
 
 		condizioniFiltro['filtro-' + filterconditions] = filtro
 
@@ -626,7 +626,12 @@ $(document).ready(function() {
 			//console.log(binding.has('sub')); // Will be true
 			resultTablePart4 = '<tr><th scope="row" class="text-muted">' + rowNum++ + '</th>';
 			for (var i = 0; i < queryFields.length; i++) {
-				resultTablePart4 = resultTablePart4 + '<td class="text-muted">' + binding.get(queryFields[i]).value + "</td>";
+				if (binding.get(queryFields[i]) != null) {
+					val = binding.get(queryFields[i]).value
+				} else {
+					val = "na"
+				}
+				resultTablePart4 = resultTablePart4 + '<td class="text-muted">' + val + "</td>";
 			};
 			resultTable = resultTable + resultTablePart4 + '</tr>';
 			$("#risultatitesto").append(binding.toString() + ",\n");