diff --git a/packages/backend-common/src/reading/tree/TarArchiveResponse.test.ts b/packages/backend-common/src/reading/tree/TarArchiveResponse.test.ts
index 3589a8d333..1bc0d3a386 100644
--- a/packages/backend-common/src/reading/tree/TarArchiveResponse.test.ts
+++ b/packages/backend-common/src/reading/tree/TarArchiveResponse.test.ts
@@ -126,7 +126,7 @@ describe('TarArchiveResponse', () => {
     const res = new TarArchiveResponse(stream, 'mock-repo/docs/', '/tmp');
     const dir = await res.dir();
 
-    expect(dir).toMatch(/^\/tmp\/.*$/);
+    expect(dir).toMatch(/^[\/\\]tmp[\/\\].*$/);
     await expect(
       fs.readFile(resolvePath(dir, 'index.md'), 'utf8'),
     ).resolves.toBe('# Test\n');
diff --git a/packages/backend-common/src/reading/tree/ZipArchiveResponse.test.ts b/packages/backend-common/src/reading/tree/ZipArchiveResponse.test.ts
index 922284c759..6c2592ffce 100644
--- a/packages/backend-common/src/reading/tree/ZipArchiveResponse.test.ts
+++ b/packages/backend-common/src/reading/tree/ZipArchiveResponse.test.ts
@@ -126,7 +126,7 @@ describe('ZipArchiveResponse', () => {
     const res = new ZipArchiveResponse(stream, 'mock-repo/docs/', '/tmp');
     const dir = await res.dir();
 
-    expect(dir).toMatch(/^\/tmp\/.*$/);
+    expect(dir).toMatch(/^[\/\\]tmp[\/\\].*$/);
     await expect(
       fs.readFile(resolvePath(dir, 'index.md'), 'utf8'),
     ).resolves.toBe('# Test\n');