diff --git a/test/functional.js b/test/functional.js
index f46ec746..570b8585 100644
--- a/test/functional.js
+++ b/test/functional.js
@@ -2397,7 +2397,7 @@ module.exports = {
                 // and be versioned
                 config.copyFiles({
                     from: './copy',
-                    to: './[path][name]-[hash].[ext]',
+                    to: './[path][name]-[hash:8].[ext]',
                     pattern: /\.(css|js)$/,
                 });
 
@@ -2427,21 +2427,20 @@ module.exports = {
                 });
 
                 testSetup.runWebpack(config, (webpackAssert) => {
-                    expect(config.outputPath).to.be.a.directory()
-                        .with.files([
-                            'entrypoints.json',
-                            'runtime.js',
-                            'main.js',
-                            'manifest.json',
+                    webpackAssert.assertDirectoryContents([
+                        'entrypoints.json',
+                        'runtime.js',
+                        'main.js',
+                        'manifest.json',
 
-                            // 1st rule
-                            'foo-5d76c098640df1edecc7ca66ee62b1ea.css',
-                            'foo-5d76c098640df1edecc7ca66ee62b1ea.js',
+                        // 1st rule
+                        'foo-[hash:8].css',
+                        'foo-[hash:8].js',
 
-                            // 2nd rule
-                            'foo.json',
-                            'foo.png',
-                        ]);
+                        // 2nd rule
+                        'foo.json',
+                        'foo.png',
+                    ]);
 
                     done();
                 });