diff --git a/src/database/create.ts b/src/database/create.ts
index bb444277..13a5c5b5 100644
--- a/src/database/create.ts
+++ b/src/database/create.ts
@@ -3,7 +3,8 @@ import type {
     DatabaseCreateContext,
 } from './type';
 import {
-    createCockroachDBDatabase, createMongoDBDatabase,
+    createCockroachDBDatabase,
+    createMongoDBDatabase,
     createMsSQLDatabase,
     createMySQLDatabase,
     createOracleDatabase,
diff --git a/src/database/driver/mongodb.ts b/src/database/driver/mongodb.ts
index 947f8dba..603336c9 100644
--- a/src/database/driver/mongodb.ts
+++ b/src/database/driver/mongodb.ts
@@ -26,7 +26,7 @@ export async function createSimpleMongoDBConnection(
 
     const client = new MongoClient(url);
     await client.connect();
-    return client();
+    return client;
 }
 
 export async function createMongoDBDatabase(
diff --git a/src/database/drop.ts b/src/database/drop.ts
index 9c15a0b3..3952b708 100644
--- a/src/database/drop.ts
+++ b/src/database/drop.ts
@@ -3,7 +3,8 @@ import type {
     DatabaseDropContext,
 } from './type';
 import {
-    dropCockroachDBDatabase, dropMongoDBDatabase,
+    dropCockroachDBDatabase,
+    dropMongoDBDatabase,
     dropMsSQLDatabase,
     dropMySQLDatabase,
     dropOracleDatabase,