diff --git a/nnn.1 b/nnn.1
index ac5463c0..8fc8a671 100644
--- a/nnn.1
+++ b/nnn.1
@@ -324,7 +324,7 @@ to list the selection file.
 .Nm
 can show the total size of non-filtered selected files listed in a
 directory. For directories, only the size of the directory is added by
-default. To add the size of the contents of a directory, switch to du mode.
+default. To add the size of the contents of a directory, sort by disk usage (aka du mode).
 .Sh FIND AND LIST
 There are two ways to search and list:
 .Pp