diff --git a/src/addons/mod/assign/services/assign-helper.ts b/src/addons/mod/assign/services/assign-helper.ts
index cb062c240..c3f948527 100644
--- a/src/addons/mod/assign/services/assign-helper.ts
+++ b/src/addons/mod/assign/services/assign-helper.ts
@@ -15,7 +15,7 @@
 import { Injectable } from '@angular/core';
 import { CoreFileUploader, CoreFileUploaderStoreFilesResult } from '@features/fileuploader/services/fileuploader';
 import { CoreSites, CoreSitesCommonWSOptions } from '@services/sites';
-import { FileEntry } from '@ionic-native/file/ngx';
+import { FileEntry, DirectoryEntry } from '@ionic-native/file/ngx';
 import {
     AddonModAssignProvider,
     AddonModAssignAssign,
diff --git a/src/addons/mod/assign/submission/file/services/handler.ts b/src/addons/mod/assign/submission/file/services/handler.ts
index f1b52ea2f..7c684ea89 100644
--- a/src/addons/mod/assign/submission/file/services/handler.ts
+++ b/src/addons/mod/assign/submission/file/services/handler.ts
@@ -187,7 +187,8 @@ export class AddonModAssignSubmissionFileHandlerService implements AddonModAssig
         plugin: AddonModAssignPlugin,
     ): Promise<number> {
         // Check if there's any change.
-        if (this.hasDataChanged(assign, submission, plugin)) {
+        const hasChanged = await this.hasDataChanged(assign, submission, plugin);
+        if (hasChanged) {
             const files = CoreFileSession.getFiles(AddonModAssignProvider.COMPONENT, assign.id);
 
             return CoreFileHelper.getTotalFilesSize(files);