diff --git a/src/server/utils/file.ts b/src/server/utils/file.ts
index c2a21de..5f264e6 100644
--- a/src/server/utils/file.ts
+++ b/src/server/utils/file.ts
@@ -1,7 +1,7 @@
 export const filePathToPath = (filePath: string) => {
   filePath = filePath
     .replace(/\.tsx?$/g, '')
-    .replace(/\.mdx$/g, '')
+    .replace(/\.mdx?$/g, '')
     .replace(/^\/?index$/, '/') // `/index`
     .replace(/\/index$/, '') // `/about/index`
     .replace(/\[\.{3}.+\]/, '*')
diff --git a/src/server/with-defaults.ts b/src/server/with-defaults.ts
index 9a94271..5481cf8 100644
--- a/src/server/with-defaults.ts
+++ b/src/server/with-defaults.ts
@@ -32,8 +32,8 @@ export const createApp = <E extends Env>(options?: ServerOptions<E>) => {
       options?.ROUTES ??
       import.meta.glob(
         [
-          '/app/routes/**/!(_*|*.test|*.spec).(ts|tsx|mdx)',
-          '/app/routes/.well-known/!(_*|*.test|*.spec).(ts|tsx|mdx)',
+          '/app/routes/**/!(_*|*.test|*.spec).(ts|tsx|md|mdx)',
+          '/app/routes/.well-known/!(_*|*.test|*.spec).(ts|tsx|md|mdx)',
         ],
         {
           eager: true,