diff --git a/packages/web-app-unzip/src/composables/useUnzipAction.ts b/packages/web-app-unzip/src/composables/useUnzipAction.ts
index f17677ac..36a59feb 100644
--- a/packages/web-app-unzip/src/composables/useUnzipAction.ts
+++ b/packages/web-app-unzip/src/composables/useUnzipAction.ts
@@ -23,6 +23,11 @@ import workerUrl from '@zip.js/zip.js/dist/zip-web-worker.js?worker&url'
 const SUPPORTED_MIME_TYPES = ['application/zip']
 const MAX_SIZE_MB = 64 // in mb
 
+// uppy's convention for directory-upload metadata on the file object. mirrors the
+// (non-exported) FileWithPath in web/packages/web-pkg/src/services/uppy/uppyService.ts.
+// uppyService.getRelativeFilePath reads .relativePath from file.data.
+type FileWithPath = Blob & { relativePath?: string }
+
 export const useUnzipAction = () => {
   const { $gettext, current: currentLanguage } = useGettext()
   const clientService = useClientService()
@@ -88,13 +93,16 @@ export const useUnzipAction = () => {
             const path = dirname(result.filename)
             const name = path === '.' ? result.filename : result.filename.substring(path.length + 1)
 
+            if (path !== '.') {
+              // attach relativePath to the data blob so uppyService preserves
+              // the subfolder structure when uploading the extracted files.
+              ;(data as FileWithPath).relativePath = urlJoin(path, name)
+            }
+
             return {
               name,
               data,
-              meta: {
-                ...(path !== '.' && { webkitRelativePath: urlJoin(path, name) }),
-                uploadId
-              }
+              meta: { uploadId }
             } as unknown as OcMinimalUppyFile
           })
         })
diff --git a/packages/web-app-unzip/tests/e2e/extractZip.spec.ts b/packages/web-app-unzip/tests/e2e/extractZip.spec.ts
index d5f46b72..1f1726b1 100644
--- a/packages/web-app-unzip/tests/e2e/extractZip.spec.ts
+++ b/packages/web-app-unzip/tests/e2e/extractZip.spec.ts
@@ -15,18 +15,33 @@ test.afterEach(async () => {
   await logout(userPage)
 })
 
-// FIXME: currently skipped because of https://github.com/opencloud-eu/web/pull/2506
-// unskip with the next OpenCloud release (v7 probably)
-test.skip('extract zip file', async () => {
+// FIXME: skipped until the bundled OpenCloud image ships a web build that contains
+// both:
+//   - https://github.com/opencloud-eu/web/pull/2506 (services announced before apps
+//     init, otherwise uppyService is undefined when the extract handler runs and the
+//     archive extraction fails)
+//   - https://github.com/opencloud-eu/web/pull/2513 (suppresses a false-positive
+//     "Folder already exists" dialog that fires whenever the zip's top-level folder
+//     name matches anything in the user's current folder, which is the case for
+//     data.zip)
+test.skip('extract zip file preserves subfolder structure', async () => {
   const uploadFile = new FilesAppBar(userPage)
   await uploadFile.uploadFile('data.zip')
 
   const file = new FilesPage(userPage)
   await file.extractZip('data.zip')
 
+  // extraction creates a folder named after the archive
   await file.openFolder('data')
-  await expect(
-    userPage.locator('span.oc-resource-basename', { hasText: 'logo-wide' })
-  ).toBeVisible()
-  await expect(userPage.locator('span.oc-resource-basename', { hasText: 'lorem' })).toBeVisible()
+  // the zip's own top-level "data/" folder must be preserved inside
+  await expect(userPage.locator('[data-test-resource-name="data"]')).toBeVisible()
+
+  await file.openFolder('data')
+  await expect(userPage.locator('[data-test-resource-name="logo-wide.png"]')).toBeVisible()
+  await expect(userPage.locator('[data-test-resource-name="lorem.txt"]')).toBeVisible()
+  await expect(userPage.locator('[data-test-resource-name="dir"]')).toBeVisible()
+
+  // nested subfolder content must be preserved, not flattened
+  await file.openFolder('dir')
+  await expect(userPage.locator('[data-test-resource-name="lorem.txt"]')).toBeVisible()
 })