diff --git a/conftest.py b/conftest.py
index 011115e..94c57b7 100644
--- a/conftest.py
+++ b/conftest.py
@@ -17,7 +17,7 @@ def get_bitcoind_version(version_string):
     # this utility function returns the version number
     # as a tuple in the form (major, minor, patch)
     version_tuple = re.match(
-        b'.*v(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)',
+        br'.*v(?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)',
         version_string).groups()
     return tuple(map(lambda x: int(x), version_tuple))
 
diff --git a/jmbase/jmbase/twisted_utils.py b/jmbase/jmbase/twisted_utils.py
index fc6798c..f85a1ad 100644
--- a/jmbase/jmbase/twisted_utils.py
+++ b/jmbase/jmbase/twisted_utils.py
@@ -2,7 +2,7 @@
 from zope.interface import implementer
 from twisted.internet.error import ReactorNotRunning
 from twisted.internet import reactor, defer
-from twisted.internet.endpoints import TCP4ClientEndpoint
+from twisted.internet.endpoints import TCP4ClientEndpoint, UNIXClientEndpoint
 from twisted.web.client import Agent, BrowserLikePolicyForHTTPS
 import txtorcon
 from txtorcon.web import tor_agent
diff --git a/jmdaemon/jmdaemon/daemon_protocol.py b/jmdaemon/jmdaemon/daemon_protocol.py
index 2694e0b..954293c 100644
--- a/jmdaemon/jmdaemon/daemon_protocol.py
+++ b/jmdaemon/jmdaemon/daemon_protocol.py
@@ -415,8 +415,8 @@ class SNICKERDaemonServerProtocol(HTTPPassThrough):
 
     @SNICKERReceiverGetProposals.responder
     def on_SNICKER_RECEIVER_GET_PROPOSALS(self):
-        for server in self.servers:
-            self.getRequest(server, self.receive_proposals_from_server)
+        for srv in self.servers:
+            self.getRequest(srv, self.receive_proposals_from_server)
         return {'accepted': True}
 
     def receive_proposals_from_server(self, response, server):
diff --git a/scripts/snicker/snicker-finder.py b/scripts/snicker/snicker-finder.py
index e49e31c..470a54f 100644
--- a/scripts/snicker/snicker-finder.py
+++ b/scripts/snicker/snicker-finder.py
@@ -24,6 +24,7 @@ in Bitcoin Core in order to get full transactions, since it
 parses the raw blocks.
 """
 
+import sys
 from optparse import OptionParser
 from jmbase import bintohex, EXIT_ARGERROR, jmprint
 import jmbitcoin as btc
diff --git a/scripts/snicker/snicker-recovery.py b/scripts/snicker/snicker-recovery.py
index 1fa6b85..c72739c 100644
--- a/scripts/snicker/snicker-recovery.py
+++ b/scripts/snicker/snicker-recovery.py
@@ -24,6 +24,7 @@ keys, so as a reminder, *always* back up either jmdat wallet files,
 or at least, the imported keys themselves.)
 """
 
+import sys
 from optparse import OptionParser
 from jmbase import bintohex, EXIT_ARGERROR, jmprint
 import jmbitcoin as btc