diff --git a/changelog/70_UNRELEASED_xxxx.xx.xx.md b/changelog/70_UNRELEASED_xxxx.xx.xx.md
index d12f16d4..3d96a90d 100644
--- a/changelog/70_UNRELEASED_xxxx.xx.xx.md
+++ b/changelog/70_UNRELEASED_xxxx.xx.xx.md
@@ -71,6 +71,7 @@
   - The green button now tracks an execution of the corresponding chore on the next scheduled time, rather than for now/today
   - New context-/more menu option "Track chore execution now" to track an execution for now/today (so the same what the green button did before)
 - Removed the limitation on the chore tracking page that the tracked time couldn't be in the future
+- Fixed that "assidgned to" was not recalculated when undoing chores
 
 ### Calendar
 
diff --git a/services/ChoresService.php b/services/ChoresService.php
index d2f8622f..ebfeb0da 100644
--- a/services/ChoresService.php
+++ b/services/ChoresService.php
@@ -243,6 +243,8 @@ class ChoresService extends BaseService
 			'undone' => 1,
 			'undone_timestamp' => date('Y-m-d H:i:s')
 		]);
+
+		$this->CalculateNextExecutionAssignment($logRow->chore_id);
 	}
 
 	public function MergeChores(int $choreIdToKeep, int $choreIdToRemove)