diff --git a/center/router/router.go b/center/router/router.go
index 6ad3f3596..4cdf875e9 100644
--- a/center/router/router.go
+++ b/center/router/router.go
@@ -114,7 +114,7 @@ func (rt *Router) configNoRoute(r *gin.Engine, fs *http.FileSystem) {
 		suffix := arr[len(arr)-1]
 
 		switch suffix {
-		case "png", "jpeg", "jpg", "svg", "ico", "gif", "css", "js", "html", "htm", "gz", "zip", "map", "ttf":
+		case "png", "jpeg", "jpg", "svg", "ico", "gif", "css", "js", "html", "htm", "gz", "zip", "map", "ttf", "md":
 			if !rt.Center.UseFileAssets {
 				c.FileFromFS(c.Request.URL.Path, *fs)
 			} else {