diff --git a/config.sample.json b/config.sample.json
index ca5c020a9..9cb2b5e72 100644
--- a/config.sample.json
+++ b/config.sample.json
@@ -6,8 +6,8 @@
     "integrations_rest_url": "https://scalar.vector.im/api",
     "bug_report_endpoint_url": "https://riot.im/bugreports/submit",
     "features": {
-        "feature_groups": "labs"
-        "feature_pinning": "labs",
+        "feature_groups": "labs",
+        "feature_pinning": "labs"
     },
     "default_federate": true,
     "roomDirectory": {