diff --git a/pack_data.go b/pack_data.go
index 8d1a669..b7db26a 100644
--- a/pack_data.go
+++ b/pack_data.go
@@ -219,6 +219,7 @@ func (pool *packDataPool) Put(data *packData) *packData {
 	msgp.CopyToJSON(&buf, bytes.NewReader(o))
 	key := buf.String()
 
+	fmt.Println(data)
 	fmt.Println("json", key)
 	fmt.Println("key", string(o))