diff --git a/README.md b/README.md
index 5bdb6fb..41a57bb 100644
--- a/README.md
+++ b/README.md
@@ -214,8 +214,8 @@ If a non-byte-string argument is passed to `umsgpack.unpackb()`, it will raise a
 u-msgpack-python's included unit tests may be run with `test_umsgpack.py`, under your favorite interpreter.
 
 ``` text
-$ python test_umsgpack.py
 $ python2 test_umsgpack.py
+$ python3 test_umsgpack.py
 $ pypy test_umsgpack.py
 ```
 
diff --git a/test_umsgpack.py b/test_umsgpack.py
index 87f7e22..8ed49a1 100644
--- a/test_umsgpack.py
+++ b/test_umsgpack.py
@@ -1,8 +1,8 @@
 # Run test_umsgpack.py with your Python interpreter of choice to test the
 # correctness of u-msgpack-python!
 #
-#   $ python test_umsgpack.py
 #   $ python2 test_umsgpack.py
+#   $ python3 test_umsgpack.py
 #   $ pypy test_umsgpack.py
 #