diff --git a/src/Workspace.cc b/src/Workspace.cc
index 843f8100..a231449d 100644
--- a/src/Workspace.cc
+++ b/src/Workspace.cc
@@ -408,7 +408,8 @@ void Workspace::appendStackOrder(BlackboxWindowList &stack_order) const {
   BlackboxWindowList::const_reverse_iterator it = stackingList.rbegin();
   const BlackboxWindowList::const_reverse_iterator end = stackingList.rend();
   for (; it != end; ++it)
-    stack_order.push_back(*it);
+    if (! (*it)->isNormal())
+      stack_order.push_back(*it);
 }