diff --git a/confluent_server/confluent/discovery/protocols/pxe.py b/confluent_server/confluent/discovery/protocols/pxe.py
index ad52bf08..ce093f0a 100644
--- a/confluent_server/confluent/discovery/protocols/pxe.py
+++ b/confluent_server/confluent/discovery/protocols/pxe.py
@@ -34,8 +34,8 @@ pxearchs = {
 
 
 def decode_uuid(rawguid):
-    lebytes = struct.unpack_from('<IHH', buffer(rawguid[:8]))
-    bebytes = struct.unpack_from('>HHI', buffer(rawguid[8:]))
+    lebytes = struct.unpack_from('<IHH', rawguid[:8])
+    bebytes = struct.unpack_from('>HHI', rawguid[8:])
     return '{0:08X}-{1:04X}-{2:04X}-{3:04X}-{4:04X}{5:08X}'.format(
         lebytes[0], lebytes[1], lebytes[2], bebytes[0], bebytes[1], bebytes[2]).lower()