diff --git a/README.rst b/README.rst
index 6277690e..f2906aae 100644
--- a/README.rst
+++ b/README.rst
@@ -38,7 +38,7 @@ A Simple Example
 
 .. code-block:: text
 
-    $ FLASK_APP=hello.py flask run
+    $ env FLASK_APP=hello.py flask run
      * Serving Flask app "hello"
      * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)