diff --git a/packages/vite-plugin-checker/src/checkers/biome/cli.ts b/packages/vite-plugin-checker/src/checkers/biome/cli.ts
index 419330c8..8e5da888 100644
--- a/packages/vite-plugin-checker/src/checkers/biome/cli.ts
+++ b/packages/vite-plugin-checker/src/checkers/biome/cli.ts
@@ -40,7 +40,7 @@ function parseBiomeOutput(output: string) {
 
   const diagnostics: NormalizedDiagnostic[] = parsed.diagnostics.map((d) => {
     const loc = {
-      file: d.location.path || '',
+      file: d.location.path?.file || '',
       start: getLineAndColumn(d.location.sourceCode, d.location.span?.[0]),
       end: getLineAndColumn(d.location.sourceCode, d.location.span?.[1]),
     }
diff --git a/playground/biome-default/__tests__/__snapshots__/test.spec.ts.snap b/playground/biome-default/__tests__/__snapshots__/test.spec.ts.snap
index 389236f0..6f8016b3 100644
--- a/playground/biome-default/__tests__/__snapshots__/test.spec.ts.snap
+++ b/playground/biome-default/__tests__/__snapshots__/test.spec.ts.snap
@@ -27,7 +27,7 @@ exports[`biome > serve > get initial error and subsequent error 2`] = `
 ]
 `;
 
-exports[`biome > serve > get initial error and subsequent error 3`] = `"[{"checkerId":"Biome","frame":"    1 | const a = 'hello'/n  > 2 | var b = 'world'/n      | ^^^^^^^^^^^^^^^/n    3 | const c = '!'/n    4 | var d = a + b + c/n    5 |","id":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","level":1,"loc":{"column":1,"file":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","line":2},"message":"[lint/style/noVar] Use let or const instead of var.","stack":""},{"checkerId":"Biome","frame":"    2 | var b = 'world'/n    3 | const c = '!'/n  > 4 | var d = a + b + c/n      | ^^^^^^^^^^^^^^^^^/n    5 |","id":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","level":1,"loc":{"column":1,"file":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","line":4},"message":"[lint/style/noVar] Use let or const instead of var.","stack":""},{"checkerId":"Biome","frame":"    2 | const b = 'world'/n    3 | const c = '!'/n  > 4 | var d = a + b + c/n      | ^^^^^^^^^^^^^^^^^/n    5 |","id":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","level":1,"loc":{"column":1,"file":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","line":4},"message":"[lint/style/noVar] Use let or const instead of var.","stack":""}]"`;
+exports[`biome > serve > get initial error and subsequent error 3`] = `"[{"checkerId":"Biome","frame":"    2 | const b = 'world'/n    3 | const c = '!'/n  > 4 | var d = a + b + c/n      | ^^^^^^^^^^^^^^^^^/n    5 |","id":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","level":1,"loc":{"column":1,"file":"<PROJECT_ROOT>/playground-temp/biome-default/src/index.js","line":4},"message":"[lint/style/noVar] Use let or const instead of var.","stack":""}]"`;
 
 exports[`biome > serve > get initial error and subsequent error 4`] = `
 [
diff --git a/playground/biome-default/__tests__/test.spec.ts b/playground/biome-default/__tests__/test.spec.ts
index abe6c97c..df9b81b6 100644
--- a/playground/biome-default/__tests__/test.spec.ts
+++ b/playground/biome-default/__tests__/test.spec.ts
@@ -7,6 +7,7 @@ import {
   isBuild,
   isServe,
   log,
+  resetDiagnostics,
   resetReceivedLog,
   sleepForEdit,
   sleepForServerReady,
@@ -22,6 +23,7 @@ describe('biome', () => {
 
       console.log('-- edit error file --')
       resetReceivedLog()
+      resetDiagnostics()
       editFile('src/index.js', (code) => code.replace(`var b = 'world'`, `const b = 'world'`))
       await sleepForEdit()
       expect(stringify(diagnostics)).toMatchSnapshot()