diff --git a/src/main/java/de/tum/in/www1/artemis/web/rest/lecture/AttachmentUnitResource.java b/src/main/java/de/tum/in/www1/artemis/web/rest/lecture/AttachmentUnitResource.java
index 516c7efec117..de4e014d583d 100644
--- a/src/main/java/de/tum/in/www1/artemis/web/rest/lecture/AttachmentUnitResource.java
+++ b/src/main/java/de/tum/in/www1/artemis/web/rest/lecture/AttachmentUnitResource.java
@@ -174,7 +174,7 @@ public ResponseEntity<AttachmentUnit> createAttachmentUnit(@PathVariable Long le
     @EnforceAtLeastEditor
     public ResponseEntity<String> uploadSlidesForProcessing(@PathVariable Long lectureId, @RequestPart("file") MultipartFile file) {
         // time until the temporary file gets deleted. Must be greater or equal than MINUTES_UNTIL_DELETION in attachment-units.component.ts
-        int minutesUntilDeletion = 3;
+        int minutesUntilDeletion = 30;
         log.debug("REST request to upload file: {}", file.getOriginalFilename());
         checkLecture(lectureId);
         if (!Objects.equals(FilenameUtils.getExtension(file.getOriginalFilename()), "pdf")) {
diff --git a/src/main/webapp/app/lecture/lecture-unit/lecture-unit-management/attachment-units/attachment-units.component.ts b/src/main/webapp/app/lecture/lecture-unit/lecture-unit-management/attachment-units/attachment-units.component.ts
index eb0d98acc88a..b8d95ef66b6c 100644
--- a/src/main/webapp/app/lecture/lecture-unit/lecture-unit-management/attachment-units/attachment-units.component.ts
+++ b/src/main/webapp/app/lecture/lecture-unit/lecture-unit-management/attachment-units/attachment-units.component.ts
@@ -52,7 +52,7 @@ export class AttachmentUnitsComponent implements OnInit {
     file: File;
     filename: string;
     //time until the file gets uploaded again. Must be less or equal than minutesUntilDeletion in AttachmentUnitResource.java
-    readonly MINUTES_UNTIL_DELETION = 3;
+    readonly MINUTES_UNTIL_DELETION = 29;
 
     constructor(
         private activatedRoute: ActivatedRoute,