diff --git a/conn.go b/conn.go
index 697bd397..2a8e2930 100644
--- a/conn.go
+++ b/conn.go
@@ -350,7 +350,6 @@ func (c *Conn) Deallocate(name string) (err error) {
 	// flush
 	wbuf.startMsg('H')
 	wbuf.closeMsg()
-	wbuf.closeMsg()
 
 	_, err = c.conn.Write(wbuf.buf)
 	if err != nil {