diff --git a/drivers/usb-common.c b/drivers/usb-common.c
index ccdb104a59..6c10860ef8 100644
--- a/drivers/usb-common.c
+++ b/drivers/usb-common.c
@@ -17,6 +17,7 @@
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
 
+#include "config.h"	/* must be first */
 #include "common.h"
 #include "usb-common.h"