diff --git a/todo.txt b/todo.txt
index 839198efd..2f80a7d54 100644
--- a/todo.txt
+++ b/todo.txt
@@ -22,8 +22,8 @@ After 1.0.0:
 * Remove port_puts() from all the ports.
 * Stack sizes article into the documentation.
 * Logo...
+* Architecture diagram.
 - Code examples into the documentation.
-- Architecture diagrams.
 
 After 1.2.0:
 X Abstract I/O channels rather than just serial ports.