--- a/Network/IRC/IrcWidget.py	Sun Mar 11 15:27:23 2018 +0100
+++ b/Network/IRC/IrcWidget.py	Sun Mar 11 15:40:15 2018 +0100
@@ -526,7 +526,7 @@
                 for line in self.__buffer.splitlines():
                     line = line.strip()
                     if line:
-                        logging.debug("<IRC> " + line)
+                        logging.debug("<IRC> %s", line)
                         handled = False
                         # step 1: give channels a chance to handle the message
                         for channel in self.__channelList: