diff --git a/docs/contributing/tests.md b/docs/contributing/tests.md
index bccec310..e2b86583 100644
--- a/docs/contributing/tests.md
+++ b/docs/contributing/tests.md
@@ -22,10 +22,10 @@ defined in the [conftest.py](https://github.com/jupyter/docker-stacks/blob/main/
 
 ## Unit tests
 
-If you want to run a python script in one of our images, you could add a unit test.
-You can do this by creating a `tests/<somestack>/units/` directory, if it doesn't already exist and put your file there.
+You can add a unit test if you want to run a python script in one of our images.
+You should create a `tests/<somestack>/units/` directory, if it doesn't already exist and put your file there.
 Files in this folder will be executed in the container when tests are run.
-You could see an [example for the TensorFlow package here](https://github.com/jupyter/docker-stacks/blob/HEAD/tests/tensorflow-notebook/units/unit_tensorflow.py).
+You can see an [example for the TensorFlow package here](https://github.com/jupyter/docker-stacks/blob/HEAD/tests/tensorflow-notebook/units/unit_tensorflow.py).
 
 ## Contributing New Tests