diff --git a/docs/develop/ports/arm/todo.txt b/docs/develop/ports/arm/todo.txt
index fae21763fc..17cc54bf21 100644
--- a/docs/develop/ports/arm/todo.txt
+++ b/docs/develop/ports/arm/todo.txt
@@ -1,4 +1,6 @@
 * Figure out how to get page flags (modified/accessed) and implement it ;)
+	use unmapped/read-only mappings to trigger soft faults
+	   for tracking used/modified flags for ARMv5 and ARMv6
 
 * Fix serial port mapping. Currently kernel uses the haiku_loader identity
   mapping for it, but this lives in user virtual address space...