diff --git a/src/Ursa.Themes.Semi/Controls/DateRangePicker.axaml b/src/Ursa.Themes.Semi/Controls/DateRangePicker.axaml
index 74fcf4e..dac2948 100644
--- a/src/Ursa.Themes.Semi/Controls/DateRangePicker.axaml
+++ b/src/Ursa.Themes.Semi/Controls/DateRangePicker.axaml
@@ -34,7 +34,6 @@
                                 HorizontalAlignment="Stretch"
                                 VerticalAlignment="Stretch"
                                 Background="Transparent"
-                                BorderThickness="1"
                                 CornerRadius="3 0 0 3"
                                 FontSize="{TemplateBinding FontSize}"
                                 Foreground="{TemplateBinding Foreground}"