diff --git a/protocol.py b/protocol.py
index 7973e2f..9c87d78 100644
--- a/protocol.py
+++ b/protocol.py
@@ -9,7 +9,7 @@ class MasterProtocol:
 
 	# Master To Client
 	# queryPacketHeader = b'\xff\xff\xff\xff\x66\x0a'
-	queryPacketHeader = b'\x7f\x0a'
+	queryPacketHeader = b'\xff\xff\xff\xff\x7f\x0a'
 
 	# Master To Server
 	challengePacketHeader = b'\xff\xff\xff\xff\x73\x0a'