diff --git a/SlimeVrOta.Gui/ErrorDialog.axaml b/SlimeVrOta.Gui/ErrorDialog.axaml
new file mode 100644
index 0000000..3f8fd12
--- /dev/null
+++ b/SlimeVrOta.Gui/ErrorDialog.axaml
@@ -0,0 +1,62 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        x:Class="SlimeVrOta.Gui.ErrorDialog"
+        Title="SlimeVR OTA Tool Error"
+        Icon="/Assets/icon.png"
+        MinWidth="200"
+        MinHeight="100"
+        MaxWidth="700"
+        MaxHeight="500"
+        SizeToContent="WidthAndHeight"
+        WindowStartupLocation="CenterOwner"
+        Padding="8"
+        Background="{DynamicResource BackgroundBrush}">
+  
+  <Window.Resources>
+    <ResourceDictionary>
+      <ResourceDictionary.ThemeDictionaries>
+        <ResourceDictionary x:Key="Light">
+          <SolidColorBrush x:Key="BackgroundBrush">WhiteSmoke</SolidColorBrush>
+          <SolidColorBrush x:Key="MidgroundBrush">#e2d8eb</SolidColorBrush>
+          <BoxShadows x:Key="BorderShadow">1 1 8 2 #c5c5c5</BoxShadows>
+          <SolidColorBrush x:Key="ProgressBrush">#d080ff</SolidColorBrush>
+        </ResourceDictionary>
+        <ResourceDictionary x:Key="Dark">
+          <SolidColorBrush x:Key="BackgroundBrush">#252525</SolidColorBrush>
+          <SolidColorBrush x:Key="MidgroundBrush">#383442</SolidColorBrush>
+          <BoxShadows x:Key="BorderShadow">1 1 8 2 #161616</BoxShadows>
+          <SolidColorBrush x:Key="ProgressBrush">#a070d0</SolidColorBrush>
+        </ResourceDictionary>
+      </ResourceDictionary.ThemeDictionaries>
+    </ResourceDictionary>
+  </Window.Resources>
+
+  <Grid RowDefinitions="*,Auto">
+    <Border Grid.Row="0"
+            CornerRadius="4"
+            BoxShadow="{DynamicResource BorderShadow}"
+            Background="{DynamicResource MidgroundBrush}"
+            VerticalAlignment="Stretch">
+      <ScrollViewer HorizontalScrollBarVisibility="Disabled"
+                    AllowAutoHide="False">
+        <SelectableTextBlock Name="ErrorText"
+                             TextWrapping="Wrap"
+                             Padding="8"
+                             SelectionBrush="{DynamicResource ProgressBrush}"
+                             HorizontalAlignment="Stretch"
+                             VerticalAlignment="Stretch">
+          Unknown error.
+        </SelectableTextBlock>
+      </ScrollViewer>
+    </Border>
+    <Button Grid.Row="1"
+            Margin="0 8 0 0"
+            HorizontalAlignment="Stretch"
+            HorizontalContentAlignment="Center"
+            Name="CloseErrorButton">
+      Close
+    </Button>
+  </Grid>
+</Window>
diff --git a/SlimeVrOta.Gui/ErrorDialog.axaml.cs b/SlimeVrOta.Gui/ErrorDialog.axaml.cs
new file mode 100644
index 0000000..807d312
--- /dev/null
+++ b/SlimeVrOta.Gui/ErrorDialog.axaml.cs
@@ -0,0 +1,16 @@
+using Avalonia.Controls;
+
+namespace SlimeVrOta.Gui;
+
+public partial class ErrorDialog : Window
+{
+    public ErrorDialog()
+    {
+        InitializeComponent();
+
+        CloseErrorButton.Click += (_, _) =>
+        {
+            Close();
+        };
+    }
+}
diff --git a/SlimeVrOta.Gui/MainWindow.axaml b/SlimeVrOta.Gui/MainWindow.axaml
index 07a7dc1..555cbc3 100644
--- a/SlimeVrOta.Gui/MainWindow.axaml
+++ b/SlimeVrOta.Gui/MainWindow.axaml
@@ -16,14 +16,12 @@
         <ResourceDictionary x:Key="Light">
           <SolidColorBrush x:Key="BackgroundBrush">WhiteSmoke</SolidColorBrush>
           <SolidColorBrush x:Key="MidgroundBrush">#e2d8eb</SolidColorBrush>
-          <SolidColorBrush x:Key="BorderBrush">#706080</SolidColorBrush>
           <BoxShadows x:Key="BorderShadow">1 1 8 2 #c5c5c5</BoxShadows>
           <SolidColorBrush x:Key="ProgressBrush">#d080ff</SolidColorBrush>
         </ResourceDictionary>
         <ResourceDictionary x:Key="Dark">
           <SolidColorBrush x:Key="BackgroundBrush">#252525</SolidColorBrush>
           <SolidColorBrush x:Key="MidgroundBrush">#383442</SolidColorBrush>
-          <SolidColorBrush x:Key="BorderBrush">#908892</SolidColorBrush>
           <BoxShadows x:Key="BorderShadow">1 1 8 2 #161616</BoxShadows>
           <SolidColorBrush x:Key="ProgressBrush">#a070d0</SolidColorBrush>
         </ResourceDictionary>
@@ -32,47 +30,6 @@
   </Window.Resources>
 
   <StackPanel x:Name="Root">
-    <Popup WindowManagerAddShadowHint="False"
-           Placement="Bottom"
-           Name="ErrorPopup"
-           MinWidth="200"
-           MaxWidth="700"
-           MaxHeight="500">
-      <Border Padding="8"
-              CornerRadius="4"
-              BorderThickness="3"
-              BorderBrush="{DynamicResource BorderBrush}"
-              Background="{DynamicResource BackgroundBrush}"
-              HorizontalAlignment="Center"
-              VerticalAlignment="Center">
-        <Grid RowDefinitions="*,Auto">
-          <Border Grid.Row="0"
-                  CornerRadius="4"
-                  Background="{DynamicResource MidgroundBrush}"
-                  VerticalAlignment="Stretch">
-            <ScrollViewer HorizontalScrollBarVisibility="Disabled"
-                          AllowAutoHide="False">
-              <SelectableTextBlock Name="ErrorText"
-                                   TextWrapping="Wrap"
-                                   Padding="8"
-                                   SelectionBrush="{DynamicResource ProgressBrush}"
-                                   HorizontalAlignment="Stretch"
-                                   VerticalAlignment="Stretch">
-                Unknown error.
-              </SelectableTextBlock>
-            </ScrollViewer>
-          </Border>
-          <Button Grid.Row="1"
-                  Margin="0 8 0 0"
-                  HorizontalAlignment="Stretch"
-                  HorizontalContentAlignment="Center"
-                  Name="CloseErrorButton">
-            Close
-          </Button>
-        </Grid>
-      </Border>
-    </Popup>
-    
     <Border Padding="8"
             CornerRadius="4"
             BoxShadow="{DynamicResource BorderShadow}"
diff --git a/SlimeVrOta.Gui/MainWindow.axaml.cs b/SlimeVrOta.Gui/MainWindow.axaml.cs
index 55da7fc..c8a0dbb 100644
--- a/SlimeVrOta.Gui/MainWindow.axaml.cs
+++ b/SlimeVrOta.Gui/MainWindow.axaml.cs
@@ -88,7 +88,6 @@ public MainWindow()
         {
             InitializeComponent();
 
-            CloseErrorButton.Click += CloseError;
             FirmwareDropBox.AddHandler(DragDrop.DropEvent, SelectFirmwareDrop);
             SelectFileButton.Click += SelectFirmwareBrowse;
             RemoveTrackerButton.Click += RemoveTracker;
@@ -118,15 +117,14 @@ protected override void OnClosed(EventArgs e)
 
         private void ShowError(string text)
         {
-            ErrorText.Text = text;
-            ErrorPopup.IsOpen = true;
+            var dialog = new ErrorDialog();
+            dialog.ErrorText.Text = text;
+            dialog.Closed += OnErrorClose;
+            dialog.ShowDialog(this);
         }
 
-        public void CloseError(object? sender, RoutedEventArgs e)
+        private void OnErrorClose(object? sender, EventArgs e)
         {
-            ErrorText.Text = "Unknown error.";
-            ErrorPopup.IsOpen = false;
-
             if (_runDiscoveryOnClose && CurrentState == FlashState.Connecting)
             {
                 _ = ReceiveHandshake(5000);