Index: sys/sys/systm.h
===================================================================
--- sys/sys/systm.h
+++ sys/sys/systm.h
@@ -209,7 +209,7 @@
 
 extern int osreldate;
 
-extern const void *zero_region;	/* address space maps to a zeroed page	*/
+extern const void *zero_region;	/* address space maps to a zero-filled region */
 
 extern int unmapped_buf_allowed;