diff --git a/vdirsyncer/storage/dav.py b/vdirsyncer/storage/dav.py
index e1e35da..b9af786 100644
--- a/vdirsyncer/storage/dav.py
+++ b/vdirsyncer/storage/dav.py
@@ -326,7 +326,7 @@ class DavStorage(Storage):
         href = item.ident
         for char in self.unsafe_href_chars:
             href = href.replace(char, '_')
-        return self._normalize_href(href + self.fileext)
+        return _encode_href(self._normalize_href(href + self.fileext))
 
     def _is_item_mimetype(self, mimetype):
         return _fuzzy_matches_mimetype(self.item_mimetype, mimetype)