diff --git a/main.py b/main.py
index 2049ae7..d7b79cc 100755
--- a/main.py
+++ b/main.py
@@ -35,7 +35,7 @@ class Irc():
         ip = self.serverdata["ip"]
         port = self.serverdata["port"]
         self.sid = self.serverdata["sid"]
-        log.info("Connecting to network %r on %s:%s" % (self.name, ip, port))
+        log.info("Connecting to network %r on %s:%s", self.name, ip, port)
 
         self.socket = socket.socket()
         self.socket.connect((ip, port))
@@ -57,16 +57,16 @@ class Irc():
                     break
                 while '\n' in buf:
                     line, buf = buf.split('\n', 1)
-                    log.debug("<- {}".format(line))
+                    log.debug("<- %s", line)
                     proto.handle_events(self, line)
             except socket.error as e:
-                log.error('Received socket.error: %s, exiting.' % str(e))
+                log.error('Received socket.error: %s, exiting.', str(e))
                 break
         sys.exit(1)
 
     def send(self, data):
         data = data.encode("utf-8") + b"\n"
-        log.debug("-> {}".format(data.decode("utf-8").strip("\n")))
+        log.debug("-> %s", data.decode("utf-8").strip("\n"))
         self.socket.send(data)
 
     def load_plugins(self):
@@ -80,9 +80,9 @@ class Irc():
                 self.loaded.append(imp.load_source(plugin, moduleinfo[1]))
             except ImportError as e:
                 if str(e).startswith('No module named'):
-                    log.error('Failed to load plugin %r: the plugin could not be found.' % plugin)
+                    log.error('Failed to load plugin %r: the plugin could not be found.', plugin)
                 else:
-                    log.error('Failed to load plugin %r: import error %s' % (plugin, str(e)))
+                    log.error('Failed to load plugin %r: import error %s', plugin, str(e))
         print("loaded plugins: %s" % self.loaded)
 
 if __name__ == '__main__':
@@ -98,9 +98,9 @@ if __name__ == '__main__':
         proto = imp.load_source(protoname, moduleinfo[1])
     except ImportError as e:
         if str(e).startswith('No module named'):
-            log.critical('Failed to load protocol module %r: the file could not be found.' % protoname)
+            log.critical('Failed to load protocol module %r: the file could not be found.', protoname)
         else:
-            log.critical('Failed to load protocol module: import error %s' % (protoname, str(e)))
+            log.critical('Failed to load protocol module: import error %s', protoname, str(e))
         sys.exit(2)
     else:
         irc_obj = Irc(proto)
diff --git a/protocols/inspircd.py b/protocols/inspircd.py
index df737b5..c83c57d 100644
--- a/protocols/inspircd.py
+++ b/protocols/inspircd.py
@@ -78,9 +78,9 @@ def removeClient(irc, numeric):
     for v in irc.channels.values():
         v.removeuser(numeric)
     sid = numeric[:3]
-    print('Removing client %s from irc.users' % numeric)
+    log.debug('Removing client %s from irc.users', numeric)
     del irc.users[numeric]
-    print('Removing client %s from irc.servers[%s]' % (numeric, sid))
+    log.debug('Removing client %s from irc.servers[%s]', numeric, sid)
     irc.servers[sid].users.remove(numeric)
 
 def quitClient(irc, numeric, reason):
@@ -221,7 +221,7 @@ def handle_uid(irc, numeric, command, args):
     realname = args[-1]
     irc.users[uid] = IrcUser(nick, ts, uid, ident, host, realname, realhost, ip)
     parsedmodes = utils.parseModes(irc, uid, [args[8], args[9]])
-    print('Applying modes %s for %s' % (parsedmodes, uid))
+    log.debug('Applying modes %s for %s', parsedmodes, uid)
     utils.applyModes(irc, uid, parsedmodes)
     irc.servers[numeric].users.append(uid)
     return {'uid': uid, 'ts': ts, 'nick': nick, 'realhost': realhost, 'host': host, 'ident': ident, 'ip': ip}
@@ -286,15 +286,15 @@ def handle_mode(irc, numeric, command, args):
 def handle_squit(irc, numeric, command, args):
     # :70M SQUIT 1ML :Server quit by GL!gl@0::1
     split_server = args[0]
-    print('Netsplit on server %s' % split_server)
+    log.info('(%s) Netsplit on server %s', irc.name, split_server)
     # Prevent RuntimeError: dictionary changed size during iteration
     old_servers = copy(irc.servers)
     for sid, data in old_servers.items():
         if data.uplink == split_server:
-            print('Server %s also hosts server %s, removing those users too...' % (split_server, sid))
+            log.debug('Server %s also hosts server %s, removing those users too...', split_server, sid)
             handle_squit(irc, sid, 'SQUIT', [sid, "PyLink: Automatically splitting leaf servers of %s" % sid])
     for user in copy(irc.servers[split_server].users):
-        print('Removing client %s (%s)' % (user, irc.users[user].nick))
+        log.debug('Removing client %s (%s)', user, irc.users[user].nick)
         removeClient(irc, user)
     del irc.servers[split_server]
     return {'target': split_server}