diff --git a/dom/fifty-shades-of-cold_test.js b/dom/fifty-shades-of-cold_test.js
index 67c2897c..f26b9966 100644
--- a/dom/fifty-shades-of-cold_test.js
+++ b/dom/fifty-shades-of-cold_test.js
@@ -1,4 +1,4 @@
-import { colors } from './subjects/fifty-shades-of-cold/data.js'
+import { colors } from './subjects/fifty-shades-of-cold/fifty-shades-of-cold.data.js'
 
 colors.sort()
 
diff --git a/subjects/fifty-shades-of-cold/README.md b/subjects/fifty-shades-of-cold/README.md
index 12df8f85..24991e7b 100644
--- a/subjects/fifty-shades-of-cold/README.md
+++ b/subjects/fifty-shades-of-cold/README.md
@@ -30,16 +30,16 @@ Check the `colors` array provided in the data file below.
 - [`className`](https://developer.mozilla.org/en-US/docs/Web/API/Element/className)
 - [`classList`](https://developer.mozilla.org/en-US/docs/Web/API/Element/classList): `contains()`, `replace()`
 
-### Provided files
+### Files
 
-You have at your disposal the following files that you can download to test locally:
+You only need to create & submit the JS file `fifty-shades-of-cold.js` ; we're providing you the following files to download (click right and save link) & test locally:
 
-- the HTML file [index.html](/public/subjects/fifty-shades-of-cold/index.html) to open in the browser, which includes:
+- the HTML file [fifty-shades-of-cold.html](/public/subjects/fifty-shades-of-cold/fifty-shades-of-cold.html) to open in the browser, which includes:
 
   - the JS script running some code, and which will also allow to run yours
   - some CSS pre-styled classes: feel free to use those as they are, or modify them
 
-- the data file [data.js](/public/subjects/fifty-shades-of-cold/data.js) from which you can import `colors`
+- the data file [fifty-shades-of-cold.data.js](/public/subjects/fifty-shades-of-cold/fifty-shades-of-cold.data.js) from which you can import `colors`
 
 ### Expected result
 
diff --git a/subjects/fifty-shades-of-cold/data.js b/subjects/fifty-shades-of-cold/fifty-shades-of-cold.data.js
similarity index 100%
rename from subjects/fifty-shades-of-cold/data.js
rename to subjects/fifty-shades-of-cold/fifty-shades-of-cold.data.js
diff --git a/subjects/fifty-shades-of-cold/index.html b/subjects/fifty-shades-of-cold/fifty-shades-of-cold.html
similarity index 100%
rename from subjects/fifty-shades-of-cold/index.html
rename to subjects/fifty-shades-of-cold/fifty-shades-of-cold.html