diff --git a/misc-utils/findmnt.8 b/misc-utils/findmnt.8
index 2072c5222..1dc6a8837 100644
--- a/misc-utils/findmnt.8
+++ b/misc-utils/findmnt.8
@@ -124,6 +124,9 @@ column contains tree formatting if the
 or
 .B \-\-raw
 options are not specified.
+
+The default list of the columns maybe be extended if the \fIlist\fP is
+specified in format +<list> (e.g. findmnt -o +PROPAGATION).
 .IP "\fB\-p, \-\-poll\fR[\fI=list\fR]\fP"
 Monitor changes in the /proc/self/mountinfo file. Supported actions are: mount,
 umount, remount and move. More than one action may be specified in a
diff --git a/misc-utils/lsblk.8 b/misc-utils/lsblk.8
index 3a9c2d414..87a659bca 100644
--- a/misc-utils/lsblk.8
+++ b/misc-utils/lsblk.8
@@ -65,6 +65,9 @@ Do not print a header line.
 Specify which output columns to print.  Use
 .B "--help"
 to get a list of all supported columns.
+
+The default list of the columns maybe be extended if the \fIlist\fP is
+specified in format +<list> (e.g. lslocks -o +UUID).
 .IP "\fB\-P, \-\-pairs\fP"
 Use key="value" output format. All potentially unsafe characters are hex-escaped (\\x<code>).
 .IP "\fB\-r, \-\-raw\fP"