diff --git a/src/sound/allegro_s.cpp b/src/sound/allegro_s.cpp
--- a/src/sound/allegro_s.cpp
+++ b/src/sound/allegro_s.cpp
@@ -13,7 +13,6 @@
 
 #include "../stdafx.h"
 
-#include "../driver.h"
 #include "../mixer.h"
 #include "../debug.h"
 #include "allegro_s.h"