diff --git a/mvc/mvc-filter.ts b/mvc/mvc-filter.ts
index 2d208eb..fb7f267 100644
--- a/mvc/mvc-filter.ts
+++ b/mvc/mvc-filter.ts
@@ -12,7 +12,7 @@ import { ViewService } from "./view.service.ts";
 export class MvcFilter implements MvFilter {
   constructor(private readonly viewService: ViewService) {}
   async filter(
-    _contextAccessor: ContextAccessor,
+    contextAccessor: ContextAccessor,
     next: NextFilterFunction,
     _parameters: unknown[],
     controllerMetadata?: ControllerMetadata,
@@ -30,6 +30,7 @@ export class MvcFilter implements MvFilter {
     if (!result) {
       return model;
     }
+    contextAccessor.setHeader("Content-Type", "text/html");
     return result;
   }
 }
diff --git a/static-files/static-files-config.ts b/static-files/static-files-config.ts
index 407f0d7..b3f8fb5 100644
--- a/static-files/static-files-config.ts
+++ b/static-files/static-files-config.ts
@@ -12,7 +12,7 @@ export const defaultConfig = {
     ".ico": "image/x-icon",
     ".html": "text/html",
     ".jpeg": "image/jpeg",
-    ".js": ".application/javascript",
+    ".js": "application/javascript",
     ".json": "application/json",
     ".mp3": "audio/mpeg",
     ".mp4": "video/mp4",