diff --git a/qutebrowser/utils/log.py b/qutebrowser/utils/log.py
index 87da6dbd8..6bbf943ba 100644
--- a/qutebrowser/utils/log.py
+++ b/qutebrowser/utils/log.py
@@ -69,8 +69,8 @@ signals = getLogger('signals')
 hints = getLogger('hints')
 keyboard = getLogger('keyboard')
 downloads = getLogger('downloads')
-js = getLogger('js')
-qt = getLogger('qt')
+js = getLogger('js')  # Javascript console messages
+qt = getLogger('qt')  # Warnings produced by Qt
 style = getLogger('style')
 rfc6266 = getLogger('rfc6266')