diff --git a/staticfile.go b/staticfile.go
index 90d0be0d..f2eb0654 100644
--- a/staticfile.go
+++ b/staticfile.go
@@ -19,6 +19,7 @@ import (
 	"net/http"
 	"os"
 	"path"
+	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
@@ -143,7 +144,7 @@ func isStaticCompress(filePath string) bool {
 // searchFile search the file by url path
 // if none the static file prefix matches ,return notStaticRequestErr
 func searchFile(ctx *context.Context) (string, os.FileInfo, error) {
-	requestPath := path.Clean(ctx.Input.Request.URL.Path)
+	requestPath := filepath.ToSlash(filepath.Clean(ctx.Input.Request.URL.Path))
 	// special processing : favicon.ico/robots.txt  can be in any static dir
 	if requestPath == "/favicon.ico" || requestPath == "/robots.txt" {
 		file := path.Join(".", requestPath)
@@ -188,7 +189,7 @@ func lookupFile(ctx *context.Context) (bool, string, os.FileInfo, error) {
 	if !fi.IsDir() {
 		return false, fp, fi, err
 	}
-	ifp := path.Join(fp, "index.html")
+	ifp := filepath.Join(fp, "index.html")
 	if ifi, _ := os.Stat(ifp); ifi != nil && ifi.Mode().IsRegular() {
 		return false, ifp, ifi, err
 	}