diff --git a/man1/prtwash.1 b/man1/prtwash.1
index cb16b06..cb759d4 100644
--- a/man1/prtwash.1
+++ b/man1/prtwash.1
@@ -92,7 +92,7 @@ option \fB\-s\fP.
 You can also delete the built package (current version) by passing
 the option \fB\-p\fP. To select only older versions for deletion,
 pass the option \fB\-b\fP instead. These two options operate independently,
-allowing you to target four distinct subsets (including the empty set)
+allowing you to target four distinct subsets of packages (including the empty set)
 for deletion.
 .PP
 By passing the option \fB\-\-parse\-pkgmk\-conf\fP, you can modify the behaviour
diff --git a/scripts/prtsweep.pl b/scripts/prtsweep.pl
index 9ef4c82..b35f693 100755
--- a/scripts/prtsweep.pl
+++ b/scripts/prtsweep.pl
@@ -6,8 +6,10 @@
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # This is a script for removing rubbish from a CRUX port tree.
 # Distributed under the terms of the GPL license.
+# (c) 2022, 2023 John McQuah <jmcquah at disroot dot org>
+# based on the bash script by Martin Opel <martin at obbl-net dot de>
 #
-# ChangeLog and author information available in the prt-utils tarball.
+# ChangeLog available in the prt-utils tarball.
 #
 ########################################################################
 
diff --git a/scripts/prtwash.pl b/scripts/prtwash.pl
index dc4cd64..0916490 100755
--- a/scripts/prtwash.pl
+++ b/scripts/prtwash.pl
@@ -6,8 +6,10 @@
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 # This is a script for removing rubbish from a CRUX port tree.
 # Distributed under the terms of the GPL license.
+# (c) 2022, 2023 John McQuah <jmcquah at disroot dot org>
+# based on the bash script by Simone Rota <sip at varlock dot com>
 #
-# ChangeLog and author information available in the prt-utils tarball.
+# ChangeLog available in the prt-utils tarball.
 #
 ########################################################################