diff --git a/src/Semi.Avalonia/Controls/Menu.axaml b/src/Semi.Avalonia/Controls/Menu.axaml
index eb27000..059d7bf 100644
--- a/src/Semi.Avalonia/Controls/Menu.axaml
+++ b/src/Semi.Avalonia/Controls/Menu.axaml
@@ -232,7 +232,7 @@
         </Style>
 
         <Style Selector="^:open /template/ PathIcon#PART_ExpandIcon">
-            <Setter Property="Foreground" Value="{DynamicResource MenuFlyoutSubItemChevronSubMenuOpened}" />
+            <Setter Property="Foreground" Value="{DynamicResource MenuItemExpandIconOpenForeground}" />
         </Style>
 
         <Style Selector="^:empty /template/ PathIcon#PART_ExpandIcon">
diff --git a/src/Semi.Avalonia/Themes/Dark/Menu.axaml b/src/Semi.Avalonia/Themes/Dark/Menu.axaml
index 67dfba6..11f6cad 100644
--- a/src/Semi.Avalonia/Themes/Dark/Menu.axaml
+++ b/src/Semi.Avalonia/Themes/Dark/Menu.axaml
@@ -37,6 +37,7 @@
 
     <SolidColorBrush x:Key="MenuItemInputGestureTextForeground" Color="Gray" />
     <SolidColorBrush x:Key="MenuItemExpandIconForeground" Opacity="0.62" Color="#F9F9F9" />
+    <SolidColorBrush x:Key="MenuItemExpandIconOpenForeground" Color="#F9F9F9" />
     <Thickness x:Key="MenuItemExpandIconMargin">4 0</Thickness>
 
     <SolidColorBrush x:Key="MenuItemDisabledForeground" Opacity="0.35" Color="#F9F9F9" />
diff --git a/src/Semi.Avalonia/Themes/Light/Menu.axaml b/src/Semi.Avalonia/Themes/Light/Menu.axaml
index b768eb6..227b9e3 100644
--- a/src/Semi.Avalonia/Themes/Light/Menu.axaml
+++ b/src/Semi.Avalonia/Themes/Light/Menu.axaml
@@ -37,6 +37,7 @@
 
     <SolidColorBrush x:Key="MenuItemInputGestureTextForeground" Color="Gray" />
     <SolidColorBrush x:Key="MenuItemExpandIconForeground" Opacity="0.62" Color="#1C1F23" />
+    <SolidColorBrush x:Key="MenuItemExpandIconOpenForeground" Color="#1C1F23" />
     <Thickness x:Key="MenuItemExpandIconMargin">4 0</Thickness>
 
     <SolidColorBrush x:Key="MenuItemDisabledForeground" Opacity="0.35" Color="#1C1F23" />