diff --git a/backend/app/dav/caldav.py b/backend/app/dav/caldav.py
index 489d679..70effce 100644
--- a/backend/app/dav/caldav.py
+++ b/backend/app/dav/caldav.py
@@ -255,9 +255,12 @@ def propfind(subpath=''):
     multistatus = ET.Element(_qn('d', 'multistatus'))
     parts = [p for p in subpath.split('/') if p]
 
-    # /dav/  (root): return principal pointer
+    # /dav/  (root) or / (when called via the app-level shortcut for DAVx5)
     if not parts:
-        multistatus.append(_root_response('/dav/', user))
+        # Use the actual request path so Clients wie DAVx5 die href passend
+        # zu ihrer Anfrage sehen.
+        request_href = request.path if request.path.endswith('/') else request.path + '/'
+        multistatus.append(_root_response(request_href, user))
         if depth != '0':
             multistatus.append(_principal_response(user))
         return _xml_response(multistatus)