diff --git a/Elwig/Windows/MemberAdminWindow.xaml.cs b/Elwig/Windows/MemberAdminWindow.xaml.cs
index 0dd62ef..9c1c979 100644
--- a/Elwig/Windows/MemberAdminWindow.xaml.cs
+++ b/Elwig/Windows/MemberAdminWindow.xaml.cs
@@ -94,8 +94,8 @@ namespace Elwig.Windows {
             GC.Collect();
         }
 
-        private void InitInputs() {
-            MgNrInput.Text = Utils.NextMgNr(Context).ToString();
+        private async void InitInputs() {
+            MgNrInput.Text = (await Utils.NextMgNr(Context)).ToString();
             EntryDateInput.Text = DateTime.Now.ToString("dd.MM.yyyy");
             if (Context.Branches.Count() == 1)
                 BranchInput.SelectedItem = Context.Branches.First();