diff --git a/usr.bin/man/man.sh.orig b/usr.bin/man/man.sh
--- a/usr.bin/man/man.sh.orig
+++ b/usr.bin/man/man.sh
@@ -171,7 +171,7 @@
 			# non-standard width
 			unset use_cat
 			decho "    Skipping catpage: non-standard page width"
-		elif exists "$2" && is_newer $found "$manpage"; then
+		elif [ -n "$2" ] && exists "$2" && is_newer $found "$manpage"; then
 			# cat page found and is newer, use that
 			use_cat=yes
 			catpage=$found