diff --git a/src/Semi.Avalonia/Controls/TreeView.axaml b/src/Semi.Avalonia/Controls/TreeView.axaml
index 863244f..4904225 100644
--- a/src/Semi.Avalonia/Controls/TreeView.axaml
+++ b/src/Semi.Avalonia/Controls/TreeView.axaml
@@ -131,6 +131,7 @@
                                 HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
                                 VerticalAlignment="{TemplateBinding VerticalAlignment}"
                                 Content="{TemplateBinding Header}"
+                                ContentTemplate="{TemplateBinding HeaderTemplate}"
                                 Focusable="False"
                                 Foreground="{TemplateBinding Foreground}" />
                         </Grid>