diff --git a/bin/setfacl/setfacl.1 b/bin/setfacl/setfacl.1
index a791e49b15e8..c407cdfbfbd4 100644
--- a/bin/setfacl/setfacl.1
+++ b/bin/setfacl/setfacl.1
@@ -43,7 +43,9 @@
 The
 .Nm
 utility sets discretionary access control information on
-the specified file(s).
+the specified file(s). If no files are specified, or the
+list constists of the only "-", the file names are taken from
+the standard input.
 .Pp
 The following options are available:
 .Bl -tag -width indent