diff --git a/main.go b/main.go
index d78e732..3ffe831 100644
--- a/main.go
+++ b/main.go
@@ -24,17 +24,15 @@ import (
 )
 
 //go:embed web/static/*
-var embedStatic embed.FS
-
-var static fs.FS = os.DirFS(filepath.Join("web", "static"))
+var static embed.FS
 
 func main() {
 	logger := log.New(os.Stdout, "pay\t", log.LstdFlags)
 
-	// static, err := fs.Sub(static, filepath.Join("web", "static"))
-	// if err != nil {
-	// 	logger.Fatalln(err)
-	// }
+	static, err := fs.Sub(static, filepath.Join("web", "static"))
+	if err != nil {
+		logger.Fatalln(err)
+	}
 
 	cpuProfilePath := flag.String("cpuprofile", "", "set path to saving CPU memory profile")
 	memProfilePath := flag.String("memprofile", "", "set path to saving pprof memory profile")
@@ -42,18 +40,18 @@ func main() {
 	flag.Parse()
 
 	config := new(domain.Config)
-	if err := env.ParseWithOptions(config, env.Options{Prefix: "PAY_"}); err != nil {
+	if err = env.ParseWithOptions(config, env.Options{Prefix: "PAY_"}); err != nil {
 		logger.Fatalln(err)
 	}
 
 	app := pay.New(logger, static, *config)
-
 	done := make(chan os.Signal, 1)
+
 	signal.Notify(done, os.Interrupt, syscall.SIGINT, syscall.SIGTERM)
 
-	if cpuProfilePath != nil && *cpuProfilePath != "" {
-		cpuProfile, err := os.Create(*cpuProfilePath)
-		if err != nil {
+	if *cpuProfilePath != "" {
+		var cpuProfile *os.File
+		if cpuProfile, err = os.Create(*cpuProfilePath); err != nil {
 			logger.Fatalln("could not create CPU profile:", err)
 		}
 		defer cpuProfile.Close()
@@ -68,11 +66,11 @@ func main() {
 
 	<-done
 
-	if err := app.Stop(context.Background()); err != nil {
+	if err = app.Stop(context.Background()); err != nil {
 		logger.Fatalln(err)
 	}
 
-	if memProfilePath == nil && *memProfilePath == "" {
+	if *memProfilePath == "" {
 		return
 	}