diff --git a/servers/MSSQL.py b/servers/MSSQL.py
old mode 100755
new mode 100644
index ce53f12..5efd26c
--- a/servers/MSSQL.py
+++ b/servers/MSSQL.py
@@ -169,7 +169,7 @@ class MSSQLBrowser(BaseRequestHandler):
 			if data[0] in b'\x02\x03': # CLNT_BCAST_EX / CLNT_UCAST_EX
 				self.send_response(soc, "MSSQLSERVER")
 			elif data[0:1] == b'\x04': # CLNT_UCAST_INST
-				self.send_response(soc, data[1:].rstrip("\x00"))
+				self.send_response(soc, data[1:].rstrip(b"\x00"))
 			elif data[0:1] == b'\x0F': # CLNT_UCAST_DAC
 				self.send_dac_response(soc)