diff --git a/source/recipes/nixpkgs-pkg/shell/main.adoc0 b/source/recipes/nixpkgs-pkg/shell/main.adoc0
index 2ceb51d..971123c 100644
--- a/source/recipes/nixpkgs-pkg/shell/main.adoc0
+++ b/source/recipes/nixpkgs-pkg/shell/main.adoc0
@@ -6,7 +6,7 @@
 include::shell.nix[]
 ....
 
-Here’s a demonstration using the shell.
+Here's a demonstration using the shell.
 
 ....
 $# echo '$ nix-shell'