diff --git a/contrib/kyua/engine/scheduler.cpp b/contrib/kyua/engine/scheduler.cpp
--- a/contrib/kyua/engine/scheduler.cpp
+++ b/contrib/kyua/engine/scheduler.cpp
@@ -1633,6 +1633,7 @@
         const passwd::user& user =
             user_config.lookup< engine::user_node >("unprivileged_user");
         props["unprivileged-user"] = user.name;
+        props["unprivileged_user"] = user.name;
     }
 
     return props;