diff --git a/src/server/server.go b/src/server/server.go
index 43dac1c..8313a7b 100644
--- a/src/server/server.go
+++ b/src/server/server.go
@@ -276,7 +276,15 @@ func Start(dir string) error {
 		return fmt.Errorf("failed to read www directory: %w", err)
 	}
 
-	notFoundData := "404 Page Not Found"
+	notFoundData := `
+<html>
+<head><title>404 Not Found</title></head>
+<body>
+<center><h1>404 Not Found</h1></center>
+<hr><center>fes</center>
+</body>
+</html>
+`
 	if _, err := os.Stat(filepath.Join(wwwDir, "404.lua")); err == nil {
 		notFoundData, err = loadLua(dir, filepath.Join(wwwDir, "404.lua"), &cfg)
 		if err != nil {
