diff --git a/README.org b/README.org
index d6d393c..52d9864 100644
--- a/README.org
+++ b/README.org
@@ -87,7 +87,7 @@ You can even do that directly in emacs with the following code:
 
 #+BEGIN_SRC emacs-lisp
 (let ((httpd-port 8000)) ; default 8080 port is already used by the sdk build engine
-  (call-interactively ’httpd-serve-directory))
+  (call-interactively 'httpd-serve-directory))
 #+END_SRC
 
 * Customize