diff --git a/src/webui/www/public/scripts/client.js b/src/webui/www/public/scripts/client.js
index c3acc5425..7d9cd9f26 100644
--- a/src/webui/www/public/scripts/client.js
+++ b/src/webui/www/public/scripts/client.js
@@ -280,7 +280,9 @@ window.addEvent('load', function () {
             noCache : true,
             method : 'get',
             onFailure : function () {
-                $('error_div').set('html', 'QBT_TR(qBittorrent client is not reachable)QBT_TR[CONTEXT=HttpServer]');
+                var errorDiv = $('error_div');
+                if (errorDiv)
+                    errorDiv.set('html', 'QBT_TR(qBittorrent client is not reachable)QBT_TR[CONTEXT=HttpServer]');
                 clearTimeout(syncMainDataTimer);
                 syncMainDataTimer = syncMainData.delay(2000);
             },
diff --git a/src/webui/www/public/scripts/mocha-init.js b/src/webui/www/public/scripts/mocha-init.js
index ba0132d9f..9788189f5 100644
--- a/src/webui/www/public/scripts/mocha-init.js
+++ b/src/webui/www/public/scripts/mocha-init.js
@@ -612,7 +612,7 @@ initializeWindows = function() {
         new Event(e).stop();
         new Request({
             url: 'logout',
-            method: 'get',
+            method: 'post',
             onSuccess: function() {
                 window.location.reload();
             }