diff --git a/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj b/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
index 8a4bfa58..1c76561c 100644
--- a/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
+++ b/CampusAppWP8/CampusAppWP8/CampusAppWP8.csproj
@@ -212,6 +212,7 @@
     <Compile Include="Utility\Logger.cs" />
     <Compile Include="Utility\HttpRequest.cs" />
     <Compile Include="Utility\Lui\Button\GoToMapButton.cs" />
+    <Compile Include="Utility\Lui\Button\UpdateButtonAppBar.cs" />
     <Compile Include="Utility\Lui\Button\ToggleButton.cs" />
     <Compile Include="Utility\Lui\Button\NavigateButton.cs" />
     <Compile Include="Utility\Lui\Button\PhoneButton.cs" />
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
index aed38723..712adcde 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
+++ b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
@@ -6,6 +6,7 @@
     xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    xmlns:lui="clr-namespace:CampusAppWP8.Utility.Lui.Button"
     mc:Ignorable="d"
     FontFamily="{StaticResource PhoneFontFamilyNormal}"
     FontSize="{StaticResource PhoneFontSizeNormal}"
@@ -137,4 +138,9 @@
         </phone:Pivot>
         <!-- <Image Source="/Assets/AlignmentGrid.png" VerticalAlignment="Top" Height="800" Width="480" Margin="0,-32,0,0" Grid.Row="0" Grid.RowSpan="2" IsHitTestVisible="False" /> -->
     </Grid>
+    <phone:PhoneApplicationPage.ApplicationBar>
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Minimized"  Opacity="1.0" >
+            <lui:UpdateButtonAppBar Click="MensaForceUpdate_Click"/>
+        </shell:ApplicationBar>
+    </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
index a1e18c30..cc42ef95 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
@@ -131,7 +131,21 @@ namespace CampusAppWP8.Pages.Mensa
 
             this.selectedIndex = todayIndex;
         }
+
+        /// <summary>
+        /// On clicking the update button in the ApplicationBar.
+        /// Force a data update from the web.
+        /// </summary>
+        /// <param name="sender">button object</param>
+        /// <param name="e">event args</param>
+        private void MensaForceUpdate_Click(object sender, EventArgs e)
+        {
+            this.ProgressBar.Visibility = System.Windows.Visibility.Visible;
+            this.feed.ForceWebUpdate();
+        }
+
         #endregion
+
         #endregion
     }
 }
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Utility/Lui/Button/UpdateButtonAppBar.cs b/CampusAppWP8/CampusAppWP8/Utility/Lui/Button/UpdateButtonAppBar.cs
new file mode 100644
index 00000000..36472d6a
--- /dev/null
+++ b/CampusAppWP8/CampusAppWP8/Utility/Lui/Button/UpdateButtonAppBar.cs
@@ -0,0 +1,48 @@
+//-----------------------------------------------------------------------
+// <copyright file="UpdateButtonAppBar.cs" company="BTU/IIT">
+//     Company copyright tag.
+// </copyright>
+// <author>stubbfel</author>
+// <sience>22.07.2013</sience>
+//----------------------------------------------------------------------
+namespace CampusAppWP8.Utility.Lui.Button
+{
+    using System;
+    using System.Windows;
+    using CampusAppWP8.Resources;
+    using Microsoft.Phone.Shell;
+
+    /// <summary>
+    /// This class create an Button which start the Email-Client
+    /// </summary>
+    public class UpdateButtonAppBar : ApplicationBarIconButton
+    {
+        #region Members
+
+        /// <summary>
+        /// IconUri of the Button
+        /// </summary>
+        private static Uri iconUri = new Uri(Icons.Update, UriKind.Relative);
+
+        /// <summary>
+        /// Text of the Button
+        /// </summary>
+        private static string text = AppResources.UpdateBtn;
+
+        #endregion
+
+        #region Constructors
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="UpdateButtonAppBar" /> class.
+        /// </summary>
+        public UpdateButtonAppBar()
+            : base()
+        {
+            this.IconUri = UpdateButtonAppBar.iconUri;
+            this.Text = UpdateButtonAppBar.text;
+        }
+
+        #endregion
+    }
+}