diff --git a/openslides/core/config.py b/openslides/core/config.py
index 22752ee42..512718207 100644
--- a/openslides/core/config.py
+++ b/openslides/core/config.py
@@ -77,9 +77,10 @@ class ConfigHandler:
                 raise ConfigError(e.messages[0])
 
         # Save the new value to the database.
-        updated_rows = ConfigStore.objects.filter(key=key).update(value=value)
-        if not updated_rows:
-            ConfigStore.objects.create(key=key, value=value)
+        config_store, created = ConfigStore.objects.get_or_create(key=key, defaults={'value': value})
+        if not created:
+            config_store.value = value
+            config_store.save()
 
         # Update cache.
         if hasattr(self, '_cache'):
diff --git a/openslides/core/models.py b/openslides/core/models.py
index e860cfdea..31e9c16f3 100644
--- a/openslides/core/models.py
+++ b/openslides/core/models.py
@@ -1,5 +1,6 @@
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
+from django.core.urlresolvers import reverse
 from django.db import models
 from django.utils.translation import ugettext_noop
 from jsonfield import JSONField
@@ -198,6 +199,12 @@ class ConfigStore(models.Model):
         permissions = (
             ('can_manage_config', ugettext_noop('Can manage configuration')),)
 
+    def get_root_rest_url(self):
+        """
+        Returns the detail url of config value.
+        """
+        return reverse('config-detail', args=[str(self.key)])
+
 
 class ChatMessage(RESTModelMixin, models.Model):
     """
diff --git a/openslides/core/static/js/core/site.js b/openslides/core/static/js/core/site.js
index f5b97d411..0afcce9ef 100644
--- a/openslides/core/static/js/core/site.js
+++ b/openslides/core/static/js/core/site.js
@@ -343,6 +343,11 @@ angular.module('OpenSlidesApp.core.site', [
             $scope.key = 'field-' + field.key;
             $scope.value = config.value;
             $scope.help_text = field.help_text;
+            $scope.default_value = field.default_value;
+            $scope.reset = function () {
+                $scope.value = $scope.default_value;
+                $scope.save(field.key, $scope.value);
+            }
         }
     };
 })
diff --git a/openslides/core/static/templates/config-form-field.html b/openslides/core/static/templates/config-form-field.html
index 12614798a..b8302b299 100644
--- a/openslides/core/static/templates/config-form-field.html
+++ b/openslides/core/static/templates/config-form-field.html
@@ -2,18 +2,27 @@
   <label>{{ label }}</label>
 
   <div class="input-group">
-    <input ng-if="type != 'choice' && type != 'textarea'" ng-model="value" ng-change="save(configOption.key, value)" id="{{ key }}"
+    <input ng-if="type != 'choice' && type != 'textarea'"
+           ng-model="$parent.value"
+           ng-change="save(configOption.key, $parent.value)"
+           id="{{ key }}"
         type="{{ type }}" class="form-control">
 
-    <textarea ng-if="type == 'textarea'" ng-model="value" ng-change="save(configOption.key, value)" id="{{ key }}" class="form-control">
+    <textarea ng-if="type == 'textarea'"
+              ng-model="$parent.value"
+              ng-change="save(configOption.key, $parent.value)"
+              id="{{ key }}" class="form-control">
     </textarea>
 
-    <select ng-if="type == 'choice'" ng-model="value" ng-change="save(configOption.key, value)" id="{{ key }}"
+    <select ng-if="type == 'choice'"
+            ng-model="$parent.value"
+            ng-change="save(configOption.key, $parent.value)"
+            id="{{ key }}"
         class="form-control" ng-options="option.value as option.display_name for option in choices">
     </select>
 
     <span class="input-group-btn">
-      <button ng-click="value=configOption.default_value; save(configOption.key, configOption.default_value)" class="btn btn-default" translate>
+      <button ng-click="reset()" class="btn btn-default" title="{{ default_value }}" translate>
         <i class="fa fa-undo"></i>
         <translate>Reset</translate>
       </button>