diff --git a/vp4d.c b/vp4d.c
index 72f1a43..3de938f 100644
--- a/vp4d.c
+++ b/vp4d.c
@@ -29,8 +29,9 @@
 
 #include "conf.h"
 #include "bitutil.h"
-#include "bitpack.h"
 #include "vint.h"
+#define TURBOPFOR_DAC
+#include "bitpack.h"
 #include "vp4.h"
 
 #define PAD8(__x) ( (((__x)+8-1)/8) )