diff --git a/doc/architecture.md b/doc/architecture.md
index 40b220a4..53d26a2c 100644
--- a/doc/architecture.md
+++ b/doc/architecture.md
@@ -65,7 +65,7 @@ Using CI with Radicle requires several co-operating components:
 * The Radicle node (`radicle-node`).
 * The Radicle CI broker (`cib`).
 * An adapter the runs CI, possibly using an external CI service.
-* A management tool (`cibool`).
+* A management tool (`cibtool`).
 
 ~~~pikchr
 right