diff --git a/COMPOSITE_TODO b/COMPOSITE_TODO
index 176b993ba7..f9328ec8d5 100644
--- a/COMPOSITE_TODO
+++ b/COMPOSITE_TODO
@@ -89,7 +89,9 @@ KDE 4.0 TODO
 ? - undirect fullscreen windows
 
 - fix shading
-- window rules need to apply to unmanaged windows as well (where applicable)
+- window-specific rules need to apply to unmanaged windows as well (where applicable)
+- some window-specific rules also related to compositing
+    - opacity
 
 ? generic dbus scripting support