diff --git a/netutils/webserver/httpd_dirlist.c b/netutils/webserver/httpd_dirlist.c
index 48226a635..5ef2e18c8 100644
--- a/netutils/webserver/httpd_dirlist.c
+++ b/netutils/webserver/httpd_dirlist.c
@@ -130,7 +130,7 @@ bool httpd_is_file(FAR const char *filename)
   snprintf(path, CONFIG_NAME_MAX, "%s/%s",
            CONFIG_NETUTILS_HTTPD_PATH, filename);
 
-  fd = open(path, "O_RDONLY");
+  fd = open(path, O_RDONLY);
 
   if (-1 != fd)
     {