diff --git a/packages/playwright-core/src/server/har/harTracer.ts b/packages/playwright-core/src/server/har/harTracer.ts
index 289a4f6d87..3596559821 100644
--- a/packages/playwright-core/src/server/har/harTracer.ts
+++ b/packages/playwright-core/src/server/har/harTracer.ts
@@ -31,7 +31,7 @@ import { getPlaywrightVersion } from '../../utils/userAgent';
 import { urlMatches } from '../../utils/network';
 import { Frame } from '../frames';
 import type { HeadersArray, LifecycleEvent } from '../types';
-import { isTextualMimeType } from '../../utils/mimeType';
+import { isTextualMimeType } from '../../utils/isomorphic/mimeType';
 
 const FALLBACK_HTTP_VERSION = 'HTTP/1.1';
 
@@ -680,4 +680,4 @@ function safeDateToISOString(value: string | number) {
   }
 }
 
-const startedDateSymbol = Symbol('startedDate');
\ No newline at end of file
+const startedDateSymbol = Symbol('startedDate');