diff --git a/src/Semi.Avalonia/Controls/AutoCompleteBox.axaml b/src/Semi.Avalonia/Controls/AutoCompleteBox.axaml
index 7c0dd9b..dd4d485 100644
--- a/src/Semi.Avalonia/Controls/AutoCompleteBox.axaml
+++ b/src/Semi.Avalonia/Controls/AutoCompleteBox.axaml
@@ -21,6 +21,7 @@
                             Name="PART_TextBox"
                             VerticalAlignment="Stretch"
                             MinHeight="{TemplateBinding MinHeight}"
+                            ClearSelectionOnLostFocus="{TemplateBinding ClearSelectionOnLostFocus}"
                             DataValidationErrors.Errors="{TemplateBinding (DataValidationErrors.Errors)}"
                             Theme="{DynamicResource NonErrorTextBox}"
                             InnerLeftContent="{TemplateBinding InnerLeftContent}"