diff --git a/usr.bin/uniq/uniq.1 b/usr.bin/uniq/uniq.1
index 79be0a40a5d..a12ad3a6ef1 100644
--- a/usr.bin/uniq/uniq.1
+++ b/usr.bin/uniq/uniq.1
@@ -153,3 +153,7 @@ A
 .Nm
 command appeared in
 .At v3 .
+.Sh BUGS
+Input lines are limited to
+.Dv LINE_MAX
+(2048) bytes in length.