diff --git a/src/main/java/com/flowingcode/addons/ycalendar/InlineDatePicker.java b/src/main/java/com/flowingcode/addons/ycalendar/InlineDatePicker.java
index 7765b13..5e3582b 100644
--- a/src/main/java/com/flowingcode/addons/ycalendar/InlineDatePicker.java
+++ b/src/main/java/com/flowingcode/addons/ycalendar/InlineDatePicker.java
@@ -42,6 +42,7 @@ private static <R,S> SerializableFunction<R,S> map(SerializableFunction<R,S> f)
   public InlineDatePicker() {
     super(VALUE_PROPERTY, null, String.class, map(LocalDate::parse), map(LocalDate::toString));
     setValue(LocalDate.now());
+    setWeekNumbersVisible(true);
   }
 
   /**
diff --git a/src/main/resources/META-INF/frontend/fc-inline-date-picker/fc-inline-date-picker.js b/src/main/resources/META-INF/frontend/fc-inline-date-picker/fc-inline-date-picker.js
index 295fe2e..529d076 100644
--- a/src/main/resources/META-INF/frontend/fc-inline-date-picker/fc-inline-date-picker.js
+++ b/src/main/resources/META-INF/frontend/fc-inline-date-picker/fc-inline-date-picker.js
@@ -78,7 +78,8 @@ export class InlineDatePicker extends LitElement {
   render() {
     return html`
       <fc-year-month-field .date="${this.displayDate}" @value-changed="${this.__onDisplayMonthChange}"></fc-year-month-field>
-      <fc-month-calendar   .month="${this.displayDate}" @date-selected="${this.__onDateSelected}" .showWeekNumbers="${this.showWeekNumbers}"></fc-year-month-field>
+      <fc-month-calendar   .month="${this.displayDate}" @date-selected="${this.__onDateSelected}" 
+      	.showWeekNumbers="${this.showWeekNumbers ? this.showWeekNumbers : undefined}"></fc-year-month-field>
     `;
   }