diff --git a/packets.py b/packets.py
index 7385291..e76825c 100644
--- a/packets.py
+++ b/packets.py
@@ -698,7 +698,7 @@ class LDAPNTLMChallenge(Packet):
 		("NTLMSSPNtWorkstationLen",                   "\x1e\x00"),
 		("NTLMSSPNtWorkstationMaxLen",                "\x1e\x00"),
 		("NTLMSSPNtWorkstationBuffOffset",            "\x38\x00\x00\x00"),
-		("NTLMSSPNtNegotiateFlags",                   "\x15\x82\x89\xe2"),
+		("NTLMSSPNtNegotiateFlags",                   "\x15\x82\x81\xe2"),
 		("NTLMSSPNtServerChallenge",                  "\x81\x22\x33\x34\x55\x46\xe7\x88"),
 		("NTLMSSPNtReserved",                         "\x00\x00\x00\x00\x00\x00\x00\x00"),
 		("NTLMSSPNtTargetInfoLen",                    "\x94\x00"),
@@ -1157,7 +1157,7 @@ class SMBSession1Data(Packet):
 		("NTLMSSPNtWorkstationLen","\x1e\x00"),
 		("NTLMSSPNtWorkstationMaxLen","\x1e\x00"),
 		("NTLMSSPNtWorkstationBuffOffset","\x38\x00\x00\x00"),
-		("NTLMSSPNtNegotiateFlags","\x15\x82\x89\xe2"),
+		("NTLMSSPNtNegotiateFlags","\x15\x82\x81\xe2"),
 		("NTLMSSPNtServerChallenge","\x81\x22\x33\x34\x55\x46\xe7\x88"),
 		("NTLMSSPNtReserved","\x00\x00\x00\x00\x00\x00\x00\x00"),
 		("NTLMSSPNtTargetInfoLen","\x94\x00"),
@@ -1478,7 +1478,7 @@ class SMB2Session1Data(Packet):
 		("NTLMSSPNtWorkstationLen","\x1e\x00"),
 		("NTLMSSPNtWorkstationMaxLen","\x1e\x00"),
 		("NTLMSSPNtWorkstationBuffOffset","\x38\x00\x00\x00"),
-		("NTLMSSPNtNegotiateFlags","\x15\x82\x89\xe2"),
+		("NTLMSSPNtNegotiateFlags","\x15\x82\x81\xe2"),
 		("NTLMSSPNtServerChallenge","\x81\x22\x33\x34\x55\x46\xe7\x88"),
 		("NTLMSSPNtReserved","\x00\x00\x00\x00\x00\x00\x00\x00"),
 		("NTLMSSPNtTargetInfoLen","\x94\x00"),