diff --git a/org_rw/org_rw.py b/org_rw/org_rw.py
index fdbd177..77644b7 100644
--- a/org_rw/org_rw.py
+++ b/org_rw/org_rw.py
@@ -1078,6 +1078,8 @@ class Headline:
             state="",
             tags_start=None,
             tags=[],
+            space_before_tags="",
+            space_after_tags="",
             contents=[],
             children=[],
             structural=[],