diff --git a/radicale/log.py b/radicale/log.py
index f091506..34d4e4c 100644
--- a/radicale/log.py
+++ b/radicale/log.py
@@ -30,7 +30,7 @@ import sys
 
 
 def configure_from_file(logger, filename, debug):
-    logging.config.fileConfig(filename)
+    logging.config.fileConfig(filename, disable_existing_loggers=False)
     if debug:
         logger.setLevel(logging.DEBUG)
         for handler in logger.handlers: