From 5c15b30058b5ec3e93cf19f77cc7d019fc78ad26 Mon Sep 17 00:00:00 2001
From: Unrud <unrud@openaliasbox.org>
Date: Fri, 4 Aug 2017 14:59:00 +0200
Subject: [PATCH] Set deleted props to None instead of ""

---
 radicale/storage.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/radicale/storage.py b/radicale/storage.py
index d00c0437e..9728434ed 100644
--- a/radicale/storage.py
+++ b/radicale/storage.py
@@ -622,7 +622,7 @@ def set_meta_all(self, props):
         delta_props = self.get_meta()
         for key in delta_props.keys():
             if key not in props:
-                delta_props[key] = ""
+                delta_props[key] = None
         delta_props.update(props)
         self.set_meta(self, delta_props)