diff --git a/packages/node_modules/@node-red/editor-client/src/js/ui/library.js b/packages/node_modules/@node-red/editor-client/src/js/ui/library.js
index f99cdf0a8..2f7559411 100644
--- a/packages/node_modules/@node-red/editor-client/src/js/ui/library.js
+++ b/packages/node_modules/@node-red/editor-client/src/js/ui/library.js
@@ -458,7 +458,10 @@ RED.library = (function() {
                             click: function() {
                                 //TODO: move this to RED.library
                                 var flowName = $("#node-input-library-filename").val();
-                                if (!/^\s*$/.test(flowName)) {
+                                flowName = flowName.trim();
+                                if(flowName === "" || flowName.endsWith("/")) {
+                                    RED.notify(RED._("library.invalidFilename"),"warning");
+                                } else {
                                     $.ajax({
                                         url:'library/flows/'+flowName,
                                         type: "POST",
diff --git a/packages/node_modules/node-red/red.js b/packages/node_modules/node-red/red.js
index 90d1ad3c1..337eb44e8 100755
--- a/packages/node_modules/node-red/red.js
+++ b/packages/node_modules/node-red/red.js
@@ -247,7 +247,7 @@ function basicAuthMiddleware(user,pass) {
         }
         var requestUser = basicAuth(req);
         if (!requestUser || requestUser.name !== user || !checkPasswordAndCache(requestUser.pass)) {
-            res.set('WWW-Authenticate', 'Basic realm=Authorization Required');
+            res.set('WWW-Authenticate', 'Basic realm="Authorization Required"');
             return res.sendStatus(401);
         }
         next();