diff --git a/dev/Expander/Expander.xaml b/dev/Expander/Expander.xaml
index f719a79222..93e1ac17a0 100644
--- a/dev/Expander/Expander.xaml
+++ b/dev/Expander/Expander.xaml
@@ -136,8 +136,8 @@
                             Padding="{StaticResource ExpanderHeaderPadding}"
                             Style="{StaticResource ExpanderHeaderDownStyle}"
                             HorizontalAlignment="Stretch"
-                            HorizontalContentAlignment="{ThemeResource ExpanderHeaderHorizontalContentAlignment}"
-                            VerticalContentAlignment="{ThemeResource ExpanderHeaderVerticalContentAlignment}"
+                            HorizontalContentAlignment="{StaticResource ExpanderHeaderHorizontalContentAlignment}"
+                            VerticalContentAlignment="{StaticResource ExpanderHeaderVerticalContentAlignment}"
                             Content="{TemplateBinding Header}"
                             ContentTemplate="{TemplateBinding HeaderTemplate}"
                             ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}"