diff --git a/buisnesslogic/src/main/java/com/plannaplan/types/WeekDay.java b/buisnesslogic/src/main/java/com/plannaplan/types/WeekDay.java
index 2db8277..b752240 100644
--- a/buisnesslogic/src/main/java/com/plannaplan/types/WeekDay.java
+++ b/buisnesslogic/src/main/java/com/plannaplan/types/WeekDay.java
@@ -1,7 +1,7 @@
 package com.plannaplan.types;
 
 public enum WeekDay {
-    MONDAY(1), TUESDAY(2), WEDNESDAY(3), THURSDAY(4), FRIDAY(5), SATURDAY(6), SUNDAY(7);
+    MONDAY(0), TUESDAY(1), WEDNESDAY(2), THURSDAY(3), FRIDAY(4), SATURDAY(5), SUNDAY(6);
 
     public final int label;