diff --git a/confluent_server/confluent/log.py b/confluent_server/confluent/log.py
index 8a978490..ee2444c1 100644
--- a/confluent_server/confluent/log.py
+++ b/confluent_server/confluent/log.py
@@ -600,7 +600,11 @@ class Logger(object):
                     if ltype == 2:
                         textrecord = data
                     else:
-                        textrecord = textdate + data + ']'
+                        if not isinstance(textdate, bytes):
+                            textdate = textdate.encode('utf-8')
+                        if not isinstance(data, bytes):
+                            data = data.encode('utf-8')
+                        textrecord = textdate + data + b']'
                 else:
                     textrecord = textdate + data
                     if not textrecord.endswith('\n'):
@@ -798,4 +802,4 @@ def logtrace():
     if tracelog is None:
         tracelog = Logger('trace', buffered=False)
     tracelog.log(traceback.format_exc(), ltype=DataTypes.event,
-                 event=Events.stacktrace)
\ No newline at end of file
+                 event=Events.stacktrace)