diff --git a/substrate/README.adoc b/substrate/README.adoc
index 85ee539b1e..f54896e5e2 100644
--- a/substrate/README.adoc
+++ b/substrate/README.adoc
@@ -149,7 +149,7 @@ You can either build it yourself (it takes a while...):
 
 [source, shell]
 ----
-ccd docker
+cd docker
 ./build.sh
 ----