diff --git a/README.rst b/README.rst
index 252cffc5f..0c327ff75 100644
--- a/README.rst
+++ b/README.rst
@@ -67,6 +67,10 @@ Contributing
 * Check out the code from svn or git
 * Import the project into Eclipse or your favorite IDE
 * Write a unit test:
+  * Binary formats and Common APIs: src/testcases/org/apache/poi/
+  * OOXML APIs only: src/ooxml/testcases/org/apache/poi/
+  * Scratchpad (Binary formats): src/scratchpad/testcases/org/apache/poi/
+  * test files: test-data/
 * Navigate the source, make changes, and run unit tests to verify
   * Binary formats and Common APIs: src/java/org/apache/poi/
   * OOXML APIs only: src/ooxml/java/org/apache/poi/