diff --git a/packages/main/src/themes/sap_horizon/DatePicker-parameters.css b/packages/main/src/themes/sap_horizon/DatePicker-parameters.css
index 34a95d697eb8..6868ddb6eff7 100644
--- a/packages/main/src/themes/sap_horizon/DatePicker-parameters.css
+++ b/packages/main/src/themes/sap_horizon/DatePicker-parameters.css
@@ -1,4 +1,4 @@
 :root {
-    --_ui5-datepicker_border_radius: 16px;
+    --_ui5-datepicker_border_radius: 8px;
     --_ui5-datepicker-hover-background: #fff;
 }
\ No newline at end of file