diff --git a/components/lib/calendar/Calendar.js b/components/lib/calendar/Calendar.js
index 10c50d4911..51e9fcdea5 100644
--- a/components/lib/calendar/Calendar.js
+++ b/components/lib/calendar/Calendar.js
@@ -4036,7 +4036,7 @@ export const Calendar = React.memo(
                         name={props.name}
                         type="text"
                         role="combobox"
-                        className={(props.inputClassName, cx('input', { context }))}
+                        className={classNames(props.inputClassName, cx('input', { context }))}
                         style={props.inputStyle}
                         readOnly={props.readOnlyInput}
                         disabled={props.disabled}