diff --git a/assets/themes/postboxes/postboxes.json b/assets/themes/postboxes/postboxes.json
index e1e657953..8442d88fe 100644
--- a/assets/themes/postboxes/postboxes.json
+++ b/assets/themes/postboxes/postboxes.json
@@ -41,7 +41,7 @@
     "maxZoom": 14,
     "minNeededElements": 100
   },
-  "credits": "nicolelaine"
+  "credits": "nicolelaine",
   "layers": [
     "postboxes",
     "postoffices",