diff --git a/reference/requirements.rst b/reference/requirements.rst
index 3d6798f3796..7c168fc30f3 100644
--- a/reference/requirements.rst
+++ b/reference/requirements.rst
@@ -12,7 +12,7 @@ the command line via:
 
 .. code-block:: bash
 
-    php app/check.php
+    $ php app/check.php
 
 Below is the list of required and optional requirements.