diff --git a/radicale/sharing/__init__.py b/radicale/sharing/__init__.py
index 43d4da94..7685b334 100644
--- a/radicale/sharing/__init__.py
+++ b/radicale/sharing/__init__.py
@@ -1223,7 +1223,8 @@ class BaseSharing:
             if user == share['Owner']:
                 result = self.database_delete_sharing(
                        ShareType=ShareType,
-                       PathOrToken=PathOrToken) # verification above that it is not None
+                       PathOrToken=PathOrToken,
+                       User=share['Owner']) # verification above that it is not None
             else:
                 # only owner is permitted to delete a share
                 logger.warning(api_info + ": %r not permitted for user %r", PathOrToken, user)