diff --git a/codec/codec.go b/codec/codec.go
index 09caf920..dad14d4a 100644
--- a/codec/codec.go
+++ b/codec/codec.go
@@ -25,7 +25,8 @@ var (
 
 var (
 	// DefaultMaxMsgSize specifies how much data codec can handle
-	DefaultMaxMsgSize = 1024 * 1024 * 4 // 4Mb
+	DefaultMaxMsgSize       = 1024 * 1024 * 4 // 4Mb
+	DefaultCodec      Codec = NewCodec()
 )
 
 // MessageType
diff --git a/store/options.go b/store/options.go
index 40ba5af7..b21e4c42 100644
--- a/store/options.go
+++ b/store/options.go
@@ -32,6 +32,7 @@ func NewOptions(opts ...Option) Options {
 	options := Options{
 		Logger:  logger.DefaultLogger,
 		Context: context.Background(),
+		Codec:   codec.DefaultCodec,
 	}
 	for _, o := range opts {
 		o(&options)