diff --git a/docs/vitest.config.ts b/docs/vitest.config.ts
index 5c2bc443ab..272c2a82b7 100644
--- a/docs/vitest.config.ts
+++ b/docs/vitest.config.ts
@@ -10,6 +10,9 @@ export default mergeConfig(
         enabled: false,
         name: 'node',
       },
+      env: {
+        VITEST_ENV: 'node',
+      },
     },
   }),
 );
diff --git a/test/setupVitest.ts b/test/setupVitest.ts
index e7c2ce531b..2e32d8614d 100644
--- a/test/setupVitest.ts
+++ b/test/setupVitest.ts
@@ -15,7 +15,7 @@ globalThis.after = afterAll;
 // @ts-ignore
 globalThis.vi = vi;
 
-const isVitestJsdom = process.env.MUI_JSDOM === 'true';
+const isVitestJsdom = process.env.VITEST_ENV === 'jsdom';
 
 // Only necessary when not in browser mode.
 if (isVitestJsdom) {