diff --git a/test/boulder-config.json b/test/boulder-config.json
index 212c5cc1e..be396af5f 100644
--- a/test/boulder-config.json
+++ b/test/boulder-config.json
@@ -44,7 +44,7 @@
     "dbName": "boulder-ca.sqlite3",
     "testMode": true,
     "issuerCert": "test/test-ca.pem",
-    "_comment": "This should only be present in testMode. In prod use an HSM."
+    "_comment": "This should only be present in testMode. In prod use an HSM.",
     "issuerKey": "test/test-ca.key"
   },