diff --git a/pack_data.go b/pack_data.go
index 2716e64..1b4fcef 100644
--- a/pack_data.go
+++ b/pack_data.go
@@ -178,6 +178,7 @@ func (pool *packDataPool) Put(data *packData) *packData {
 	o := make([]byte, 0)
 	o, err = msgp.AppendIntf(o, data)
 	if err != nil {
+		fmt.Println(err)
 		return data
 	}