diff --git a/integrations/redirect.ts b/integrations/redirect.ts
index 700f2d03d4..2a1b25c027 100644
--- a/integrations/redirect.ts
+++ b/integrations/redirect.ts
@@ -30,10 +30,9 @@ export default function redirect(): AstroIntegration {
           const { redirect_to, redirect_from } = file.data;
           const here =
             "/" +
-            relative(pages, file.path).replace(
-              /(?:index)?\.(?:md|mdx|markdown|astro)$/,
-              "",
-            );
+            relative(pages, file.path)
+              .replace(/\\/g, "/")
+              .replace(/(?:index)?\.(?:md|mdx|markdown|astro)$/, "");
           if (typeof redirect_to === "string") {
             return { from: here, to: redirect_to };
           }