diff --git a/src/class_objectProcessor.py b/src/class_objectProcessor.py
index 3e3261ad..cad8fe63 100644
--- a/src/class_objectProcessor.py
+++ b/src/class_objectProcessor.py
@@ -147,7 +147,7 @@ class objectProcessor(threading.Thread):
             sqlExecute(
                 'UPDATE sent SET status=?, lastactiontime=?'
                 ' WHERE ackdata=?',
-                ' ackreceived', int(time.time()), data[readPosition:])
+                'ackreceived', int(time.time()), data[readPosition:])
             queues.UISignalQueue.put((
                 'updateSentItemStatusByAckdata',
                 (data[readPosition:],
@@ -383,9 +383,9 @@ class objectProcessor(threading.Thread):
             signatureLength, signatureLengthLength = decodeVarint(
                 data[readPosition:readPosition + 10])
             readPosition += signatureLengthLength
-            signature = data[readPosition:readPosition + signatureLength]
+            signature = bytes(data[readPosition:readPosition + signatureLength])
             if highlevelcrypto.verify(
-                    data[8:endOfSignedDataPosition],
+                    bytes(data[8:endOfSignedDataPosition]),
                     signature, hexlify(publicSigningKey)):
                 logger.debug('ECDSA verify passed (within processpubkey)')
             else:
diff --git a/src/highlevelcrypto.py b/src/highlevelcrypto.py
index c2d9ebb2..03e2d1d3 100644
--- a/src/highlevelcrypto.py
+++ b/src/highlevelcrypto.py
@@ -30,7 +30,7 @@ def makeCryptor(privkey):
 def hexToPubkey(pubkey):
     """Convert a pubkey from hex to binary"""
     pubkey_raw = a.changebase(pubkey[2:], 16, 256, minlen=64)
-    pubkey_bin = '\x02\xca\x00 ' + pubkey_raw[:32] + '\x00 ' + pubkey_raw[32:]
+    pubkey_bin = '\x02\xca\x00 '.encode('raw_unicode_escape') + pubkey_raw[:32] + '\x00 '.encode() + pubkey_raw[32:]
     return pubkey_bin
 
 
diff --git a/src/network/bmproto.py b/src/network/bmproto.py
index cd839a96..66950380 100644
--- a/src/network/bmproto.py
+++ b/src/network/bmproto.py
@@ -468,8 +468,6 @@ class BMProto(AdvancedDispatcher, ObjectTracker):
         return self.decode_payload_content("LQIQ16sH")
 
     def bm_command_addr(self):
-        # print('+++++++++++++++++++++++++++\
-        # bm_command_addr bm_command_addr bm_command_addr ++++++++++++++++')
         """Incoming addresses, process them"""
         addresses = self._decode_addr()      # pylint: disable=redefined-outer-name
         for i in addresses:
diff --git a/src/protocol.py b/src/protocol.py
index fd3ce26b..dd3af795 100644
--- a/src/protocol.py
+++ b/src/protocol.py
@@ -326,6 +326,7 @@ def assembleVersionMessage(remoteHost, remotePort, participatingStreams, server=
     # = 127.0.0.1. This will be ignored by the remote host. The actual remote connected IP will be used.
     #python3 need to check
     payload += '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF'.encode('raw_unicode_escape') + pack('>L', 2130706433)
+
     # we have a separate extPort and incoming over clearnet
     # or outgoing through clearnet
     extport = BMConfigParser().safeGetInt('bitmessagesettings', 'extport')