diff --git a/Tests/README.txt b/Tests/README.txt
index 7622836b8..169bc4da5 100644
--- a/Tests/README.txt
+++ b/Tests/README.txt
@@ -1,4 +1,14 @@
 Minimalistic PIL test framework.
 
-Test scripts are named "test_xxx" and are supposed to output "ok".
-That's it.
+Test scripts are named "test_xxx" and are supposed to output "ok". That's it. To run the tests::
+
+    python setup.py develop
+
+Run the tests from the root of the Pillow source distribution:
+
+    python selftest.py
+    python Tests/run.py --installed
+
+To run an individual test:
+
+    python Tests/test_image.py