diff --git a/backend/src/main/java/core/services/TaskSeriesService.java b/backend/src/main/java/core/services/TaskSeriesService.java
index fbfbf22..a2094c8 100644
--- a/backend/src/main/java/core/services/TaskSeriesService.java
+++ b/backend/src/main/java/core/services/TaskSeriesService.java
@@ -62,6 +62,7 @@ public class TaskSeriesService {
         List<AbstractSchedule> clonedSchedules = new ArrayList<>();
 
         LocalDate currentDate = rootTask.getStartDate().plusDays(offsetMap.get(rootTask));
+        long index = 1;
         while(currentDate.isBefore(endingDate)) {
             var cloneResult = rootTask.cloneTask();
             Task clonedRootTask = cloneResult.getValue00();
@@ -73,10 +74,11 @@ public class TaskSeriesService {
                 taskSerie.addItem(item);
             }
 
-            clonedRootTask.shiftTask(offsetMap.get(rootTask));
+            clonedRootTask.shiftTask(index * offsetMap.get(rootTask));
 
             currentDate = currentDate.plusDays(offsetMap.get(rootTask));
             itemIndex += offsetMap.size();
+            index++;
         }
 
         return new Tupel<>(clonedTasks, clonedSchedules);