diff --git a/seahub/utils/__init__.py b/seahub/utils/__init__.py
index f829d2ce2a..10e5f693a6 100644
--- a/seahub/utils/__init__.py
+++ b/seahub/utils/__init__.py
@@ -439,6 +439,25 @@ def gen_inner_file_get_url(token, filename):
     else:
         return gen_file_get_url(token, filename)
 
+def gen_inner_file_upload_url(op, token):
+    """Generate inner fileserver upload url.
+
+    If ``ENABLE_INNER_FILESERVER`` set to False(defaults to True), will
+    returns outer fileserver file url.
+
+    Arguments:
+    - `op`:
+    - `token`:
+
+    Returns:
+        e.g., http://127.0.0.1:<port>/<op>/<token>
+        http://127.0.0.1:8082/update-api/80c69afa-9438-4ee6-a297-a24fadb10750
+    """
+    if ENABLE_INNER_FILESERVER:
+        return '%s/%s/%s' % (get_inner_fileserver_root(), op, token)
+    else:
+        return gen_file_upload_url(token, op)
+
 def get_max_upload_file_size():
     """Get max upload file size from config file, defaults to no limit.
 
diff --git a/seahub/wopi/views.py b/seahub/wopi/views.py
index d8fe2bfad9..51e9ebbcb4 100644
--- a/seahub/wopi/views.py
+++ b/seahub/wopi/views.py
@@ -20,7 +20,7 @@ from seaserv import seafile_api
 
 from seahub.base.accounts import User
 from seahub.utils import gen_inner_file_get_url, \
-    gen_file_upload_url, get_file_type_and_ext, is_pro_version
+    gen_inner_file_upload_url, get_file_type_and_ext, is_pro_version
 from seahub.utils.file_op import check_file_lock
 from seahub.base.templatetags.seahub_tags import email2nickname
 
@@ -348,7 +348,7 @@ class WOPIFilesContentsView(APIView):
                 return HttpResponse(json.dumps({}), status=500,
                         content_type=json_content_type)
 
-            update_url = gen_file_upload_url(token, 'update-api')
+            update_url = gen_inner_file_upload_url('update-api', token)
 
             # update file
             files = {