diff --git a/mongo/docker-entrypoint-initdb.d/mongo-init.js b/mongo/docker-entrypoint-initdb.d/mongo-init.js
index e3daeb16a864b82e8abbb02109e7fcceef605a34..106b533c5788e9b1fbee42b644a689ce883af18d 100644
--- a/mongo/docker-entrypoint-initdb.d/mongo-init.js
+++ b/mongo/docker-entrypoint-initdb.d/mongo-init.js
@@ -140,7 +140,7 @@ db.exports.insertMany(
                 "example/example/1.0":{},
                 "example/example/2.0":{"hello":"world"}
             },
-            "ttl": 300
+            "cacheTTL": 300
         }
     ]
 );