diff --git a/sys/uvm/uvm_stat.c b/sys/uvm/uvm_stat.c
index 4fcecbe793cf..efa608152c53 100644
--- a/sys/uvm/uvm_stat.c
+++ b/sys/uvm/uvm_stat.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: uvm_stat.c,v 1.16 2000/12/01 09:48:56 chs Exp $	 */
+/*	$NetBSD: uvm_stat.c,v 1.17 2001/02/04 10:55:58 mrg Exp $	 */
 
 /*
  *
@@ -182,6 +182,9 @@ uvm_hist(bitmask)
 	if ((bitmask & UVMHIST_PDHIST) || bitmask == 0)
 		hists[i++] = &pdhist;
 
+	if ((bitmask & UVMHIST_UBCHIST) || bitmask == 0)
+		hists[i++] = &ubchist;
+
 	hists[i] = NULL;
 
 	uvmhist_dump_histories(hists);
diff --git a/sys/uvm/uvm_stat.h b/sys/uvm/uvm_stat.h
index 9739bea811fa..aa96f1013e7a 100644
--- a/sys/uvm/uvm_stat.h
+++ b/sys/uvm/uvm_stat.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: uvm_stat.h,v 1.18 2000/04/11 08:12:14 pk Exp $	*/
+/*	$NetBSD: uvm_stat.h,v 1.19 2001/02/04 10:55:58 mrg Exp $	*/
 
 /*
  *
@@ -134,6 +134,7 @@ LIST_HEAD(uvm_history_head, uvm_history);
 /* and these are the bit values of each history */
 #define	UVMHIST_MAPHIST		0x00000001	/* maphist */
 #define	UVMHIST_PDHIST		0x00000002	/* pdhist */
+#define	UVMHIST_UBCHIST		0x00000004	/* ubchist */
 
 #ifdef _KERNEL