diff --git a/usr.sbin/vipw/vipw.8 b/usr.sbin/vipw/vipw.8
index 2e063212c51..7162baa5e4f 100644
--- a/usr.sbin/vipw/vipw.8
+++ b/usr.sbin/vipw/vipw.8
@@ -116,4 +116,4 @@ The mechanism for checking for password file modifications requires that
 run for at least one second.
 Non-interactive editor scripts should invoke
 .Xr sleep 1
-or equivalent to insure this happens.
+or equivalent to ensure this happens.