diff --git a/src/library/Uno.Material/Styles/Controls/v2/CommandBar.xaml b/src/library/Uno.Material/Styles/Controls/v2/CommandBar.xaml
index 3c1ba2128..354430151 100644
--- a/src/library/Uno.Material/Styles/Controls/v2/CommandBar.xaml
+++ b/src/library/Uno.Material/Styles/Controls/v2/CommandBar.xaml
@@ -87,6 +87,7 @@
 								<!-- UNO WORKAROUND: The ViewBox center should be horizontal Stretch but the Grid aligns the content left -->
 								<Viewbox x:Name="ContentViewbox"
 										 Height="{ThemeResource AppBarButtonContentHeight}"
+										 Width="{ThemeResource AppBarButtonContentHeight}"
 										 VerticalAlignment="Center"
 										 HorizontalAlignment="Center"
 										 AutomationProperties.AccessibilityView="Raw">