diff --git a/vtqe/httpserver/http.go b/vtqe/httpserver/http.go
index 01cbda4..4228e69 100644
--- a/vtqe/httpserver/http.go
+++ b/vtqe/httpserver/http.go
@@ -55,8 +55,8 @@ func RunHttpServer(listenIp, port, auth, folderPath, certKey, version, indexFile
 
 func (v VtqeHttpServer) httpListen(w http.ResponseWriter, r *http.Request) {
 	log := starlog.Std.NewFlag()
-	w.Header().Set("Server", "Vicorique")
-	w.Header().Set("Powered By", "B612.ME")
+	w.Header().Set("Server", "Victorique")
+	w.Header().Set("Powered", "B612.ME")
 	write401 := func() {
 		w.Header().Set("WWW-Authenticate", ` Basic realm="Please Enter Passwd"`)
 		w.WriteHeader(401)
@@ -138,7 +138,7 @@ func (v VtqeHttpServer) httpListen(w http.ResponseWriter, r *http.Request) {
 	}
 	fpinfo, _ := os.Stat(fullpath)
 	name := filepath.Base(fullpath)
-	ext := filepath.Ext(name)[1:]
+	ext := filepath.Ext(name)
 	mime := GetMIME(ext)
 	if mime == "" || v.stopMime {
 		w.Header().Set("Content-Type", "application/download")
diff --git a/vtqe/httpserver/mime.go b/vtqe/httpserver/mime.go
index 39136a9..1f1ad79 100644
--- a/vtqe/httpserver/mime.go
+++ b/vtqe/httpserver/mime.go
@@ -1,6 +1,10 @@
 package httpserver
 
 func GetMIME(ext string) string {
+	if len(ext) == 0 || ext == "." {
+		return ""
+	}
+	ext = ext[1:]
 	switch ext {
 	case "123":
 		return "application/vnd.lotus-1-2-3"