From 19bd2a4746a377f82e3006d5300d5a4379474722 Mon Sep 17 00:00:00 2001
From: Dinika Saxena <dinikasaxenas@gmail.com>
Date: Thu, 5 Dec 2024 11:57:13 +0100
Subject: [PATCH] Do not add extra leading -- in error message for flag

---
 lib/cli/options.js                 | 2 +-
 test/node-unit/cli/options.spec.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/cli/options.js b/lib/cli/options.js
index ed350ce82f..8ef5a28c6b 100644
--- a/lib/cli/options.js
+++ b/lib/cli/options.js
@@ -133,7 +133,7 @@ const parse = (args = [], defaultValues = {}, ...configObjects) => {
       expectedTypeForFlag(maybeFlag) !== 'number'
     ) {
       throw createInvalidArgumentTypeError(
-        `Mocha flag '--${maybeFlag}' given invalid option: '${arg}'`,
+        `Mocha flag '${maybeFlag}' given invalid option: '${arg}'`,
         Number(arg),
         expectedTypeForFlag(maybeFlag)
       );
diff --git a/test/node-unit/cli/options.spec.js b/test/node-unit/cli/options.spec.js
index a99812d328..2b6200fbcc 100644
--- a/test/node-unit/cli/options.spec.js
+++ b/test/node-unit/cli/options.spec.js
@@ -690,7 +690,7 @@ describe('options', function () {
 
       const invalidArgError = (flag, arg, expectedType = 'string') => {
         return {
-          message: `Mocha flag '--${flag}' given invalid option: '${arg}'`,
+          message: `Mocha flag '${flag}' given invalid option: '${arg}'`,
           code: constants.INVALID_ARG_TYPE,
           argument: arg,
           actual: 'number',