diff --git a/js/script_4.3.js b/js/script_4.3.js
index f31abb5..dd13542 100644
--- a/js/script_4.3.js
+++ b/js/script_4.3.js
@@ -392,9 +392,12 @@ $(document).ready(function() {
 			queryJson = JSON.parse(data.target.result)
         	makeUpGui(queryJson);
         };
-  		if (file) {reader.readAsText(file);}
+  		if (file !== '') {
+			reader.readAsText(file);
+			$("#apriFile")[0].value = '';
+		};
 	});
-	
+
 	// Evento: SCELTA CATEGORIA GRAMMATICALE 
 	$('#cla-TabContent').on('change', 'select.catgram', function(e) {
 		e.preventDefault();