diff --git a/def.go b/def.go
index a8fc02f..323594d 100644
--- a/def.go
+++ b/def.go
@@ -58,7 +58,7 @@ type PacketAdminJoin struct {
 
 func (p *PacketAdminJoin) Bytes() []byte {
 	buf := new(bytes.Buffer)
-	enc := gob.NewEncoder(&buf)
+	enc := gob.NewEncoder(*buf)
 
 	p.PLength = uint16(len(p.Password) + len(p.AppName) + len(p.AppVersion) + 3)
 	err := enc.Encode(p)