diff --git a/mininet/log.py b/mininet/log.py
index cefda94..a19970f 100644
--- a/mininet/log.py
+++ b/mininet/log.py
@@ -160,7 +160,7 @@ def makeListCompatible( fn ):
         "Generated function. Closure-ish."
         if len( args ) == 1:
             return fn( *args )
-        args = ' '.join( map( str, args ) )
+        args = ' '.join( str( arg ) for arg in args )
         return fn( args )
 
     # Fix newfn's name and docstring
@@ -169,7 +169,8 @@ def makeListCompatible( fn ):
     return newfn
 
 _loggers = lg.info, lg.output, lg.warn, lg.error, lg.debug
-_loggers = tuple( map( makeListCompatible, _loggers ) )
+_loggers = tuple( makeListCompatible( logger )
+                  for logger in _loggers )
 lg.info, lg.output, lg.warn, lg.error, lg.debug = _loggers
 info, output, warn, error, debug = _loggers