diff --git a/README.md b/README.md
index 82f9b99..aadc4f8 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,12 @@ dotnet run
 
 Then in a seperate terminal window run the tests using the commands below.
 
-I have added a HOSTNAME variable to each of the scripts (except simple-test.js) which needs to be added when running them.
+I have added a HOSTNAME variable to each of the scripts which needs to be added when running them.
+
+## Simple Test
+```sh
+k6 run -e HOSTNAME=localhost:5157 tests/simple-test.js
+```
 
 ## Stress Test
 ```sh
diff --git a/tests/simple-test.js b/tests/simple-test.js
index 9dd5aab..f548518 100644
--- a/tests/simple-test.js
+++ b/tests/simple-test.js
@@ -6,5 +6,5 @@ export const options = {
 };
 
 export default () => {
-    http.get('http://localhost:5157/age/1987-09-01');
+    http.get(`http://${__ENV.HOSTNAME}/age/1987-09-01`);
 };
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