diff --git a/BeWo/View/Controls/Utils/HelpInfoControl.xaml.cs b/BeWo/View/Controls/Utils/HelpInfoControl.xaml.cs
index 0e7266179..8a4713ca7 100644
--- a/BeWo/View/Controls/Utils/HelpInfoControl.xaml.cs
+++ b/BeWo/View/Controls/Utils/HelpInfoControl.xaml.cs
@@ -31,7 +31,7 @@ namespace BeWo.View.Controls.Utils
 
         private void btn_Click(object sender, RoutedEventArgs e)
         {
-            if (!string.IsNullOrWhiteSpace(Url))
+            if (!string.IsNullOrWhiteSpace(Url) && Url.StartsWith("http"))
                 Process.Start(new ProcessStartInfo(Url) { UseShellExecute = true });
         }
     }