diff --git a/src/config/example.database.ts b/src/config/example.database.ts
index 501a7ee..35e2e27 100644
--- a/src/config/example.database.ts
+++ b/src/config/example.database.ts
@@ -1,2 +1,3 @@
+// MongoDB connection string
 export const url =
   "mongodb+srv://username:password@server/database?retryWrites=true&w=majority";