diff --git a/doc/source/index.rst b/doc/source/index.rst
index c3bac9d..cbd6971 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -63,7 +63,7 @@
 
 ::
 
-    $ sudo tee <<<"stack ALL=(ALL) NOPASSWD: ALL" /etc/sudoers
+    $ echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack
     $ sudo su - stack
 
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