diff --git a/lib/MySQL_Protocol.cpp b/lib/MySQL_Protocol.cpp
index e5356c5b44..9caa018f3a 100644
--- a/lib/MySQL_Protocol.cpp
+++ b/lib/MySQL_Protocol.cpp
@@ -704,6 +704,7 @@ bool MySQL_Protocol::generate_STMT_PREPARE_RESPONSE(uint8_t sequence_id, MySQL_S
 	hdr.pkt_length=12;
 	memcpy(okpack,&hdr,sizeof(mysql_hdr)); // copy header
 	okpack[4]=0;
+	okpack[13]=0;
 	okpack[15]=0;
 	if (_stmt_id) {
 		memcpy(okpack+5,&_stmt_id,sizeof(uint32_t));