diff --git a/quad/doc/Unity_notes.md b/quad/doc/Unity_notes.md
index a9c915498787a6c89e5b2cd62086cc1b006fed6f..874c5ecc431a0000f38c4736c6b341e145a16ff8 100644
--- a/quad/doc/Unity_notes.md
+++ b/quad/doc/Unity_notes.md
@@ -14,5 +14,5 @@ as the documentation in [`Unity/docs`](/Unity/docs)
 are nice references
   - Generally, the format is to start `main()` with `UNITY_BEGIN()`, followed by calls to
 `RUN_TEST(test_function)` where `test_function` is a test to run, ended with
-`return UNITY_END()`
-	
+`return UNITY_END()`. Additionally, each `test_function` should be a `void` and call the
+[appropriate asserts](/Unity/docs/UnityAssertionsReference.md).