diff --git a/contrib/phabricator.py b/contrib/phabricator.py
--- a/contrib/phabricator.py
+++ b/contrib/phabricator.py
@@ -277,7 +277,6 @@
     transactions = []
     if neednewdiff:
         diff = creatediff(ctx)
-        writediffproperties(ctx, diff)
         transactions.append({'type': 'update', 'value': diff[r'phid']})
     else:
         # Even if we don't need to upload a new diff because the patch content