diff --git a/sb600spi.c b/sb600spi.c
index e36ac96..fe60aa9 100644
--- a/sb600spi.c
+++ b/sb600spi.c
@@ -25,6 +25,7 @@
 
 #include "flash.h"
 #include "programmer.h"
+#include "hwaccess.h"
 #include "spi.h"
 
 /* This struct is unused, but helps visualize the SB600 SPI BAR layout.