diff --git a/pkg/models/task_collection.go b/pkg/models/task_collection.go
index 565c275b4..25b78e463 100644
--- a/pkg/models/task_collection.go
+++ b/pkg/models/task_collection.go
@@ -208,7 +208,10 @@ func (tf *TaskCollection) ReadAll(s *xorm.Session, a web.Auth, search string, pa
 			return nil, 0, 0, err
 		}
 		if !canRead {
-			return nil, 0, 0, ErrUserDoesNotHaveAccessToProject{ProjectID: tf.ProjectID}
+			return nil, 0, 0, ErrUserDoesNotHaveAccessToProject{
+				ProjectID: tf.ProjectID,
+				UserID:    a.GetID(),
+			}
 		}
 		projects = []*Project{{ID: tf.ProjectID}}
 	}
diff --git a/pkg/routes/caldav/listStorageProvider.go b/pkg/routes/caldav/listStorageProvider.go
index 20f9a2e04..f513912e8 100644
--- a/pkg/routes/caldav/listStorageProvider.go
+++ b/pkg/routes/caldav/listStorageProvider.go
@@ -623,7 +623,7 @@ func (vcls *VikunjaCaldavProjectStorage) getProjectRessource(isCollection bool)
 	if !can {
 		_ = s.Rollback()
 		log.Errorf("User %v tried to access a caldav resource (Project %v) which they are not allowed to access", vcls.user.Username, vcls.project.ID)
-		return rr, models.ErrUserDoesNotHaveAccessToProject{ProjectID: vcls.project.ID}
+		return rr, models.ErrUserDoesNotHaveAccessToProject{ProjectID: vcls.project.ID, UserID: vcls.user.ID}
 	}
 	err = vcls.project.ReadOne(s, vcls.user)
 	if err != nil {