diff --git a/Elwig/Services/DeliveryService.cs b/Elwig/Services/DeliveryService.cs
index 2f98bdf..335b8ab 100644
--- a/Elwig/Services/DeliveryService.cs
+++ b/Elwig/Services/DeliveryService.cs
@@ -568,8 +568,8 @@ namespace Elwig.Services {
             } else if (exportMode == ExportMode.Export) {
                 var d = new SaveFileDialog() {
                     FileName = $"Lieferungen_{DateTime.Now:yyyy-MM-dd_HH-mm-ss}_{App.ZwstId}.elwig.zip",
-                    DefaultExt = "zip",
-                    Filter = "ZIP-Datei (*.zip)|*.zip",
+                    DefaultExt = "elwig.zip",
+                    Filter = "Elwig-Export-Datei (*.elwig.zip)|*.elwig.zip",
                     Title = $"{DeliveryJournal.Name} speichern unter - Elwig"
                 };
                 if (d.ShowDialog() == true) {
diff --git a/Elwig/Services/MemberService.cs b/Elwig/Services/MemberService.cs
index feaa3b1..da45671 100644
--- a/Elwig/Services/MemberService.cs
+++ b/Elwig/Services/MemberService.cs
@@ -414,8 +414,8 @@ namespace Elwig.Services {
             } else if (exportMode == ExportMode.Export) {
                 var d = new SaveFileDialog() {
                     FileName = $"Mitglieder_{DateTime.Now:yyyy-MM-dd_HH-mm-ss}_{App.ZwstId}.elwig.zip",
-                    DefaultExt = "zip",
-                    Filter = "ZIP-Datei (*.zip)|*.zip",
+                    DefaultExt = ".elwig.zip",
+                    Filter = "Elwig-Export-Datei (*.elwig.zip)|*.elwig.zip",
                     Title = $"{MemberList.Name} speichern unter - Elwig"
                 };
                 if (d.ShowDialog() == true) {
diff --git a/Elwig/Windows/MainWindow.xaml.cs b/Elwig/Windows/MainWindow.xaml.cs
index b1ea1e0..1240305 100644
--- a/Elwig/Windows/MainWindow.xaml.cs
+++ b/Elwig/Windows/MainWindow.xaml.cs
@@ -99,7 +99,7 @@ namespace Elwig.Windows {
             try {
                 var d = new OpenFileDialog() {
                     Title = "Export-Datei auswählen - Elwig",
-                    DefaultExt = ".elwig.zip",
+                    DefaultExt = "elwig.zip",
                     Filter = "Elwig-Export-Datei (*.elwig.zip)|*.elwig.zip",
                     Multiselect = true,
                 };