diff --git a/object/adapter.go b/object/adapter.go
index 3efae0d2..b475a790 100644
--- a/object/adapter.go
+++ b/object/adapter.go
@@ -87,7 +87,7 @@ func (a *Adapter) CreateDatabase() error {
 	}
 	defer engine.Close()
 
-	_, err = engine.Exec(fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s default charset utf8 COLLATE utf8_general_ci", a.dbName))
+	_, err = engine.Exec(fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s default charset utf8mb4 COLLATE utf8mb4_general_ci", a.dbName))
 	return err
 }