diff --git a/webadmin/src/js/client.js b/webadmin/src/js/client.js
index db83b39ba..a1baaf270 100644
--- a/webadmin/src/js/client.js
+++ b/webadmin/src/js/client.js
@@ -407,6 +407,13 @@ angular.module('Application').service('Client', ['$http', 'md5', 'Notification',
         }).error(defaultErrorHandler(callback));
     };
 
+    Client.prototype.getGroup = function (groupId, callback) {
+        $http.get(client.apiOrigin + '/api/v1/groups/' + groupId).success(function (data, status) {
+            if (status !== 200 || typeof data !== 'object') return callback(new ClientError(status, data));
+            callback(null, data);
+        }).error(defaultErrorHandler(callback));
+    };
+
     Client.prototype.createGroup = function (name, callback) {
         var data = {
             name: name
diff --git a/webadmin/src/views/users.html b/webadmin/src/views/users.html
index 31275ac01..f4ec84344 100644
--- a/webadmin/src/views/users.html
+++ b/webadmin/src/views/users.html
@@ -185,6 +185,12 @@
                 <h4 class="modal-title">Delete group {{ groupRemove.group.name }}</h4>
             </div>
             <div class="modal-body">
+                <div ng-show="groupRemove.memberCount" class="text-danger">
+                    <b>This group still has {{ groupRemove.memberCount }} members. Are you sure this group is not used?</b>
+                    <br/>
+                    <br/>
+                </div>
+
                 <form name="groupRemoveForm" role="form" novalidate ng-submit="groupRemove.submit()" autocomplete="off">
                     <input type="password" style="display: none;">
                     <div class="form-group" ng-class="{ 'has-error': (groupRemoveForm.password.$dirty && groupRemoveForm.password.$invalid) || (!groupRemoveForm.password.$dirty && groupRemove.error.password)}">
diff --git a/webadmin/src/views/users.js b/webadmin/src/views/users.js
index b175a5880..0157be8a4 100644
--- a/webadmin/src/views/users.js
+++ b/webadmin/src/views/users.js
@@ -86,6 +86,7 @@ angular.module('Application').controller('UsersController', ['$scope', '$locatio
         error: {},
         group: null,
         password: '',
+        memberCount: 0,
 
         show: function (group) {
             $scope.groupRemove.busy = false;
@@ -98,7 +99,13 @@ angular.module('Application').controller('UsersController', ['$scope', '$locatio
             $scope.groupRemoveForm.$setUntouched();
             $scope.groupRemoveForm.$setPristine();
 
-            $('#groupRemoveModal').modal('show');
+            Client.getGroup(group.id, function (error, result) {
+                if (error) return console.error('Unable to fetch group information.', error.statusCode, error.message);
+
+                $scope.groupRemove.memberCount = result.userIds.length;
+
+                $('#groupRemoveModal').modal('show');
+            });
         },
 
         submit: function () {