diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 883a63c034401ec1fceb477fe33c8342f74a87c1..1248883c0aea4d1ecc3cfeaa219b739ee7712de6 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +1,12 @@
 The SWIFT source code is using a variation of the 'Google' formatting style. 
 The script 'format.sh' in the root directory applies the clang-format-3.8
 tool with our style choices to all the SWIFT C source file. Please apply 
-the formatting script to the files before submitting a merge request.
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+the formatting script to the files before submitting a merge request.
+
+The SWIFT code comes with a series of unit tests that are run automatically 
+when a push to the master branch occurs. The suite can be run by doing a `make 
+check` in the root directory. Please check that the test suite still
+runs with your changes applied before submitting a merge request and add 
+relevant unit tests probing the correctness of new modules. An example of how
+to add a test to the suite can be found by considering the tests/testGreeting 
+case.
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