diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index b0cb052..a74442d 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -5,6 +5,7 @@
 
 #include <signal.h>
 #include "kern_constants.h"
+#include "kern_util.h"
 #include "longjmp.h"
 #include "task.h"
 #include "user.h"