diff --git a/packages/mdx/test/compile.js b/packages/mdx/test/compile.js
index f11a6c486..1c96f3048 100644
--- a/packages/mdx/test/compile.js
+++ b/packages/mdx/test/compile.js
@@ -999,10 +999,10 @@ test('@mdx-js/mdx: compile', async function (t) {
         const exception = /** @type {Error} */ (error)
         const match = /at Component \(([^)]+)\)/.exec(String(exception.stack))
         // To do: check if this works on windows.
-        const place = base.pathname + 'unknown.mdx:2:3'
-        return place === match?.[1]
-      },
-      'should support source maps'
+        const expected = base.pathname + 'unknown.mdx:2:3'
+        const actual = match?.[1].split(/\\|\//g).join('/')
+        return actual === expected
+      }
     )
 
     await fs.unlink(url)