diff --git a/piwigo/config.json b/piwigo/config.json
index 924e9fafc..69f762001 100644
--- a/piwigo/config.json
+++ b/piwigo/config.json
@@ -24,6 +24,7 @@
   ],
   "full_access": true,
   "map": [
+    "config:rw",
     "media:rw",
     "share:rw",
     "ssl"