diff --git a/dist/cli/index.js b/dist/cli/index.js
--- a/dist/cli/index.js
+++ b/dist/cli/index.js
@@ -1255,7 +1255,7 @@ function getRouteAnnotations({
       type Module = typeof import("${routeImportSource}")
 
       type Info = GetInfo<{
-        file: "${file}",
+        file: "${file.replace(/\\/g, "/")}",
         module: Module
       }>
     ` + "\n\n" + generate(matchesType).code + "\n\n" + import_dedent.default`
diff --git a/dist/vite.js b/dist/vite.js
--- a/dist/vite.js
+++ b/dist/vite.js
@@ -1273,7 +1273,7 @@ function getRouteAnnotations({
       type Module = typeof import("${routeImportSource}")
 
       type Info = GetInfo<{
-        file: "${file}",
+        file: "${file.replace(/\\/g, "/")}",
         module: Module
       }>
     ` + "\n\n" + generate(matchesType).code + "\n\n" + import_dedent.default`