diff --git a/main.go b/main.go
index dd09a4e..0c3bec4 100644
--- a/main.go
+++ b/main.go
@@ -62,7 +62,7 @@ func (m *milkDropWindow) loadPreset(preset string) {
 	C.projectm_load_preset_file(m.handle, cPreset, false)
 }
 
-func render(window *sdl.Window, handle C.projectm_handle) (bool, error) {
+func (m *milkDropWindow) render() (bool, error) {
 	var audioData [bufSize]int16
 
 	err := binary.Read(os.Stdin, binary.LittleEndian, &audioData)
@@ -72,10 +72,10 @@ func render(window *sdl.Window, handle C.projectm_handle) (bool, error) {
 		return true, err
 	}
 
-	C.projectm_pcm_add_int16(handle, (*C.int16_t)(&audioData[0]), C.uint(bufSize), C.PROJECTM_STEREO)
+	C.projectm_pcm_add_int16(m.handle, (*C.int16_t)(&audioData[0]), C.uint(bufSize), C.PROJECTM_STEREO)
 
-	C.projectm_opengl_render_frame(handle)
-	window.GLSwap()
+	C.projectm_opengl_render_frame(m.handle)
+	m.window.GLSwap()
 
 	return true, nil
 }
@@ -128,7 +128,7 @@ func main() {
 			break
 		}
 
-		running, err = render(m.window, m.handle)
+		running, err = m.render()
 		if err != nil {
 			panic(err)
 		}