diff --git a/src/Avalonia.Themes.Fluent2/Controls/ButtonSpinner.xaml b/src/Avalonia.Themes.Fluent2/Controls/ButtonSpinner.xaml
index 59ee9dab13..3ab64572e0 100644
--- a/src/Avalonia.Themes.Fluent2/Controls/ButtonSpinner.xaml
+++ b/src/Avalonia.Themes.Fluent2/Controls/ButtonSpinner.xaml
@@ -178,6 +178,7 @@
                           <ControlTheme TargetType="FlyoutPresenter" BasedOn="{StaticResource {x:Type FlyoutPresenter}}">
                             <Setter Property="Padding" Value="0"/>
                             <Setter Property="Background" Value="Transparent"/>
+                            <Setter Property="MinWidth" Value="0"/>
                           </ControlTheme>
                         </Flyout.FlyoutPresenterTheme>
                         <Border Name="PopupContentRoot"