diff --git a/radicale/xmlutils.py b/radicale/xmlutils.py
index 72c193c..a0ecdad 100644
--- a/radicale/xmlutils.py
+++ b/radicale/xmlutils.py
@@ -296,7 +296,10 @@ def _propfind_response(path, item, props, user):
             # pylint: enable=W0511
         elif tag == _tag("D", "current-user-principal") and user:
             tag = ET.Element(_tag("D", "href"))
-            tag.text = _href("/%s/" % user)
+            if item.resource_type == "addressbook":
+                tag.text = _href("/%s/addressbook.vcf/" % user)
+            else:
+                tag.text = _href("/%s/calendar.ics/" % user)
             element.append(tag)
         elif tag == _tag("D", "current-user-privilege-set"):
             privilege = ET.Element(_tag("D", "privilege"))