diff --git a/packages/webpack-cli/src/webpack-cli.ts b/packages/webpack-cli/src/webpack-cli.ts
index fd653d7f897..fcb5e2ab6b9 100644
--- a/packages/webpack-cli/src/webpack-cli.ts
+++ b/packages/webpack-cli/src/webpack-cli.ts
@@ -992,16 +992,16 @@ class WebpackCLI implements IWebpackCLI {
     // Extract all the flags being exported from core.
     // A list of cli flags generated by core can be found here https://github.com/webpack/webpack/blob/main/test/__snapshots__/Cli.basictest.js.snap
     const options = builtInFlags.concat(
-      Object.entries(this.webpack.cli.getArguments())
-        .map<WebpackCLIBuiltInOption>(([name, meta]) => {
+      Object.entries(this.webpack.cli.getArguments()).map<WebpackCLIBuiltInOption>(
+        ([name, meta]) => {
           return {
             ...meta,
             name,
             group: "core",
             helpLevel: minimumHelpFlags.includes(name) ? "minimum" : "verbose",
           };
-        })
-        .concat(builtInFlags),
+        },
+      ),
     );
 
     this.builtInOptionsCache = options;
diff --git a/test/build/json/logging.config.js b/test/build/json/logging.config.js
index f25deb4239c..d53a5228db5 100644
--- a/test/build/json/logging.config.js
+++ b/test/build/json/logging.config.js
@@ -1,4 +1,5 @@
 module.exports = {
+  mode: "development",
   infrastructureLogging: {
     level: "log",
   },