diff --git a/sys/sparc64/include/frame.h b/sys/sparc64/include/frame.h
index 9ab6db9b8e16..b566fe32ab1d 100644
--- a/sys/sparc64/include/frame.h
+++ b/sys/sparc64/include/frame.h
@@ -34,6 +34,7 @@
 struct	trapframe {
 	u_long	tf_global[8];
 	u_long	tf_out[8];
+	u_long	tf_pil;
 	u_long	tf_tnpc;
 	u_long	tf_tpc;
 	u_long	tf_tstate;