diff --git a/staticfile.go b/staticfile.go
index a5f6b65c..96c97367 100644
--- a/staticfile.go
+++ b/staticfile.go
@@ -68,7 +68,7 @@ func serverStaticRouter(ctx *context.Context) {
 			if finfo.IsDir() && !DirectoryIndex {
 				middleware.Exception("403", ctx.ResponseWriter, ctx.Request, "403 Forbidden")
 				return
-			} else if ctx.Input.Request.URL.Path[len(ctx.Input.Request.URL.Path)-1] != '/' {
+			} else if finfo.IsDir() && ctx.Input.Request.URL.Path[len(ctx.Input.Request.URL.Path)-1] != '/' {
 				http.Redirect(ctx.ResponseWriter, ctx.Request, ctx.Input.Request.URL.Path+"/", 302)
 				return
 			}