diff --git a/source/recipes/devshell/env-var/main.adoc0 b/source/recipes/devshell/env-var/main.adoc0
index d4ff58d..c4f2ca2 100644
--- a/source/recipes/devshell/env-var/main.adoc0
+++ b/source/recipes/devshell/env-var/main.adoc0
@@ -25,7 +25,7 @@ $ echo "FOO=${FOO}"
 $# ../../../../../start-shell nix develop <<EOL
 $# echo 'echo "FOO=${FOO}"'
 $ env | grep FOO
-$ echo $FOO
+$ echo FOO=$FOO
 $# EOL
 ....