diff --git a/lib/solaar/gtk.py b/lib/solaar/gtk.py
index 6d88e4d7..e4e56cef 100755
--- a/lib/solaar/gtk.py
+++ b/lib/solaar/gtk.py
@@ -102,7 +102,7 @@ def _parse_arguments():
 
     import logging
     if args.debug > 0:
-        log_level = logging.WARNING - 10 * args.debug
+        log_level = logging.ERROR - 10 * args.debug
         log_format = '%(asctime)s,%(msecs)03d %(levelname)8s [%(threadName)s] %(name)s: %(message)s'
         logging.basicConfig(level=max(log_level, logging.DEBUG), format=log_format, datefmt='%H:%M:%S')
     else: