diff --git a/pisi/context.py b/pisi/context.py
index 06ee4c84..3924eeee 100644
--- a/pisi/context.py
+++ b/pisi/context.py
@@ -25,6 +25,7 @@ config = None
 
 log = None
 
+# used for bug #10568
 locked = False
 
 def set_option(opt, val):