Use boolean for another flag option.
diff --git a/Lib/logging/config.py b/Lib/logging/config.py
index 93d68a3..07574d3 100644
--- a/Lib/logging/config.py
+++ b/Lib/logging/config.py
@@ -49,7 +49,7 @@
 #   _listener holds the server object doing the listening
 _listener = None
 
-def fileConfig(fname, defaults=None, disable_existing_loggers=1):
+def fileConfig(fname, defaults=None, disable_existing_loggers=True):
     """
     Read the logging configuration from a ConfigParser-format file.