diff --git a/traccar/config.json b/traccar/config.json
index 752599a..e753736 100755
--- a/traccar/config.json
+++ b/traccar/config.json
@@ -23,14 +23,13 @@
     "ssl"
   ],
   "options": {
-    "log_level": "info",
     "port": 8072,
     "ssl": true,
     "certfile": "fullchain.pem",
     "keyfile": "privkey.pem"
   },
   "schema": {
-    "log_level": "match(^(trace|debug|info|notice|warning|error|fatal)$)",
+    "log_level": "match(^(trace|debug|info|notice|warning|error|fatal)$)?",
     "port": "port",
     "ssl": "bool",
     "certfile": "str",