diff --git a/FModel/ViewModels/ModelViewerViewModel.cs b/FModel/ViewModels/ModelViewerViewModel.cs
index 3bbf7c4b..06afded6 100644
--- a/FModel/ViewModels/ModelViewerViewModel.cs
+++ b/FModel/ViewModels/ModelViewerViewModel.cs
@@ -133,7 +133,10 @@ namespace FModel.ViewModels
 
             ModelAndCam p;
             if (AppendMode && CanAppend)
+            {
                 p = SelectedModel;
+                _loadedModels.Add(new ModelAndCam(export) {IsVisible = false});
+            }
             else
             {
                 p = new ModelAndCam(export);
@@ -505,6 +508,13 @@ namespace FModel.ViewModels
         public Geometry3D ZAxis { get; set; }
         public int TriangleCount { get; set; }
 
+        private bool _isVisible = true;
+        public bool IsVisible
+        {
+            get => _isVisible;
+            set => SetProperty(ref _isVisible, value);
+        }
+
         private MeshGeometryModel3D _selectedGeometry; // selected material
         public MeshGeometryModel3D SelectedGeometry
         {
diff --git a/FModel/Views/ModelViewer.xaml b/FModel/Views/ModelViewer.xaml
index dc07a792..73ae17d5 100644
--- a/FModel/Views/ModelViewer.xaml
+++ b/FModel/Views/ModelViewer.xaml
@@ -44,14 +44,7 @@
                     </Grid.ColumnDefinitions>
 
                     <TextBlock Grid.Row="0" Grid.Column="0" Text="Models" VerticalAlignment="Center" Margin="0 0 0 10" />
-                    <ComboBox Grid.Row="0" Grid.Column="2" ItemsSource="{Binding ModelViewer.LoadedModelsView, IsAsync=True}"
-                              SelectedItem="{Binding ModelViewer.SelectedModel, Mode=TwoWay}">
-                        <ComboBox.ItemTemplate>
-                            <DataTemplate>
-                                <TextBlock Text="{Binding Export.Name}" />
-                            </DataTemplate>
-                        </ComboBox.ItemTemplate>
-                    </ComboBox>
+                    <ComboBox Grid.Row="0" Grid.Column="2" Style="{StaticResource ModelsComboBox}" />
 
                     <TextBlock Grid.Row="1" Grid.Column="0" Text="Triangles" VerticalAlignment="Center" Margin="0 0 0 10" />
                     <TextBlock Grid.Row="1" Grid.Column="2" Text="{Binding ModelViewer.SelectedModel.TriangleCount, FallbackValue=0, StringFormat={}{0:### ### ### ###}}" VerticalAlignment="Center" HorizontalAlignment="Right" />
diff --git a/FModel/Views/Resources/Resources.xaml b/FModel/Views/Resources/Resources.xaml
index e874d435..060dcf2a 100644
--- a/FModel/Views/Resources/Resources.xaml
+++ b/FModel/Views/Resources/Resources.xaml
@@ -618,6 +618,25 @@
         </Style.Triggers>
     </Style>
 
+    <Style x:Key="ModelsComboBox" TargetType="ComboBox" BasedOn="{StaticResource {x:Type ComboBox}}">
+        <Setter Property="ItemsSource" Value="{Binding ModelViewer.LoadedModelsView, IsAsync=True}" />
+        <Setter Property="SelectedItem" Value="{Binding ModelViewer.SelectedModel, Mode=TwoWay}" />
+        <Setter Property="ItemTemplate">
+            <Setter.Value>
+                <DataTemplate>
+                    <TextBlock Text="{Binding Export.Name}" />
+                </DataTemplate>
+            </Setter.Value>
+        </Setter>
+        <Setter Property="ItemContainerStyle">
+            <Setter.Value>
+                <Style TargetType="{x:Type ComboBoxItem}" BasedOn="{StaticResource {x:Type ComboBoxItem}}">
+                    <Setter Property="Visibility" Value="{Binding IsVisible, Converter={StaticResource BoolToVisibilityConverter}}" />
+                </Style>
+            </Setter.Value>
+        </Setter>
+    </Style>
+
     <Style x:Key="MaterialsListBox" TargetType="ListBox" BasedOn="{StaticResource {x:Type ListBox}}">
         <Setter Property="ItemsSource" Value="{Binding ModelViewer.SelectedModel.Group3d, IsAsync=True}" />
         <Setter Property="SelectedItem" Value="{Binding ModelViewer.SelectedModel.SelectedGeometry}" />