diff --git a/client-src/elements/chromedash-enterprise-release-notes-page_test.ts b/client-src/elements/chromedash-enterprise-release-notes-page_test.ts
index 68346ea53814..431522338dda 100644
--- a/client-src/elements/chromedash-enterprise-release-notes-page_test.ts
+++ b/client-src/elements/chromedash-enterprise-release-notes-page_test.ts
@@ -418,8 +418,8 @@ describe('chromedash-enterprise-release-notes-page', () => {
           features[2].querySelector('.summary')!.textContent);
         const stages = Array.from(features[2].querySelectorAll('li'));
         assert.equal(4, stages.length);
-        assert.include(stages[0].textContent, 'Chrome 100 on Windows, Mac, Linux, Android');
-        assert.include(stages[1].textContent, 'Chrome 101 on Windows, Mac, Linux, Android');
+        assert.include(stages[0].textContent, 'Chrome 100 on Windows, MacOS, Linux, Android');
+        assert.include(stages[1].textContent, 'Chrome 101 on Windows, MacOS, Linux, Android');
         assert.include(stages[2].textContent, 'Chrome 102 on iOS, Android');
         assert.include(stages[3].textContent, 'Chrome 103 on iOS');
 
diff --git a/client-src/elements/form-field-enums.ts b/client-src/elements/form-field-enums.ts
index bd2d1d4c529f..c2b7df76118c 100644
--- a/client-src/elements/form-field-enums.ts
+++ b/client-src/elements/form-field-enums.ts
@@ -50,7 +50,7 @@ export const PLATFORM_CATEGORIES: Record<string, [number, string]> = {
   PLATFORM_CHROMEOS: [3, 'ChromeOS'],
   PLATFORM_LACROS: [4, 'LaCrOS'],
   PLATFORM_LINUX: [5, 'Linux'],
-  PLATFORM_MAC: [6, 'Mac'],
+  PLATFORM_MAC: [6, 'MacOS'],
   PLATFORM_WINDOWS: [7, 'Windows'],
   PLATFORM_FUCHSIA: [8, 'Fuchsia'],
 };
@@ -61,7 +61,7 @@ export const PLATFORMS_DISPLAYNAME: Record<number, string> = {
   3: 'ChromeOS', // PLATFORM_CHROMEOS
   4: 'LaCrOS', // PLATFORM_LACROS
   5: 'Linux', // PLATFORM_LINUX
-  6: 'Mac', // PLATFORM_MAC
+  6: 'MacOS', // PLATFORM_MAC
   7: 'Windows', // PLATFORM_WINDOWS
   8: 'Fuchsia', // PLATFORM_FUCHSIA
 };
diff --git a/internals/core_enums.py b/internals/core_enums.py
index 883047c0e09c..c5a6302cf88e 100644
--- a/internals/core_enums.py
+++ b/internals/core_enums.py
@@ -85,7 +85,7 @@
   (PLATFORM_CHROMEOS, 'ChromeOS'),
   (PLATFORM_LACROS, 'LaCROS'),
   (PLATFORM_LINUX, 'Linux'),
-  (PLATFORM_MAC, 'Mac'),
+  (PLATFORM_MAC, 'MacOS'),
   (PLATFORM_WINDOWS, 'Windows'),
   (PLATFORM_FUCHSIA, 'Fuchsia'),
 ])