diff --git a/src/main/java/de/tum/cit/aet/artemis/lecture/service/AttachmentUnitService.java b/src/main/java/de/tum/cit/aet/artemis/lecture/service/AttachmentUnitService.java
index e86d7c22e7f5..83d3ffdf6751 100644
--- a/src/main/java/de/tum/cit/aet/artemis/lecture/service/AttachmentUnitService.java
+++ b/src/main/java/de/tum/cit/aet/artemis/lecture/service/AttachmentUnitService.java
@@ -117,6 +117,7 @@ public AttachmentUnit updateAttachmentUnit(AttachmentUnit existingAttachmentUnit
         existingAttachmentUnit.setDescription(updateUnit.getDescription());
         existingAttachmentUnit.setName(updateUnit.getName());
         existingAttachmentUnit.setReleaseDate(updateUnit.getReleaseDate());
+        existingAttachmentUnit.setCompetencyLinks(updateUnit.getCompetencyLinks());
 
         AttachmentUnit savedAttachmentUnit = lectureUnitService.saveWithCompetencyLinks(existingAttachmentUnit, attachmentUnitRepository::saveAndFlush);
 
diff --git a/src/main/java/de/tum/cit/aet/artemis/lecture/web/AttachmentUnitResource.java b/src/main/java/de/tum/cit/aet/artemis/lecture/web/AttachmentUnitResource.java
index 0c7c2996e162..166f3638051a 100644
--- a/src/main/java/de/tum/cit/aet/artemis/lecture/web/AttachmentUnitResource.java
+++ b/src/main/java/de/tum/cit/aet/artemis/lecture/web/AttachmentUnitResource.java
@@ -100,7 +100,7 @@ public AttachmentUnitResource(AttachmentUnitRepository attachmentUnitRepository,
     @EnforceAtLeastEditor
     public ResponseEntity<AttachmentUnit> getAttachmentUnit(@PathVariable Long attachmentUnitId, @PathVariable Long lectureId) {
         log.debug("REST request to get AttachmentUnit : {}", attachmentUnitId);
-        AttachmentUnit attachmentUnit = attachmentUnitRepository.findByIdElseThrow(attachmentUnitId);
+        AttachmentUnit attachmentUnit = attachmentUnitRepository.findOneWithSlidesAndCompetencies(attachmentUnitId);
         checkAttachmentUnitCourseAndLecture(attachmentUnit, lectureId);
         authorizationCheckService.checkHasAtLeastRoleInCourseElseThrow(Role.EDITOR, attachmentUnit.getLecture().getCourse(), null);