diff --git a/resiliosync/config.json b/resiliosync/config.json
index 737ca8bf6..688079deb 100644
--- a/resiliosync/config.json
+++ b/resiliosync/config.json
@@ -52,7 +52,7 @@
   "schema": {
     "PUID": "int",
     "PGID": "int",
-    "TZ": "str",
+    "TZ": "str?",
     "localdisks": "str?",
     "networkdisks": "str?",
     "cifsusername": "str?",
diff --git a/webtop/config.json b/webtop/config.json
index a2db845ff..3ee3f20d2 100644
--- a/webtop/config.json
+++ b/webtop/config.json
@@ -56,7 +56,7 @@
   "schema": {
     "PUID": "int",
     "PGID": "int",
-    "TZ": "str",
+    "TZ": "str?",
     "localdisks": "str?",
     "networkdisks": "str?",
     "cifsusername": "str?",