diff --git a/src/lib_sdl.cr b/src/lib_sdl.cr
index 6f180d2..2bf3570 100644
--- a/src/lib_sdl.cr
+++ b/src/lib_sdl.cr
@@ -2,6 +2,7 @@ require "sdl"
 
 @[Link("SDL2")]
 lib LibSDL
+  fun queue_audio = SDL_QueueAudio(dev : AudioDeviceID, data : Int16*, len : UInt32)
 end
 
 module SDL