diff --git a/packages/main/src/themes/DatePicker.css b/packages/main/src/themes/DatePicker.css
index ec4403089676..216c79f6622e 100644
--- a/packages/main/src/themes/DatePicker.css
+++ b/packages/main/src/themes/DatePicker.css
@@ -41,6 +41,7 @@
 }
 
 :host .ui5-date-picker-input {
+    width: 100%;
 	color: inherit;
 	background-color: inherit;
 	border-radius: inherit;