diff --git a/doc/contributing.texi b/doc/contributing.texi
index d1e2e63758..e936e611da 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -138,6 +138,7 @@ version from the Git repository:
 
 @example
 git clone https://git.guix.gnu.org/guix.git
+cd guix
 @end example
 
 @cindex authentication, of a Guix checkout
@@ -177,6 +178,7 @@ guix shell -D guix -CPW
 or even, from within a Git worktree for Guix:
 
 @example
+echo $(pwd) >> ~/.config/guix/shell-authorized-directories
 guix shell -CPW
 @end example