diff --git a/player/lua/ytdl_hook.lua b/player/lua/ytdl_hook.lua
index fe055b4d1c..613f5a3286 100644
--- a/player/lua/ytdl_hook.lua
+++ b/player/lua/ytdl_hook.lua
@@ -153,7 +153,7 @@ local function edl_escape(url)
 end
 
 local function url_is_safe(url)
-    local proto = type(url) == "string" and url:match("^(.+)://") or nil
+    local proto = type(url) == "string" and url:match("^(%a[%w+.-]*):") or nil
     local safe = proto and safe_protos[proto]
     if not safe then
         msg.error(("Ignoring potentially unsafe url: '%s'"):format(url))