diff --git a/macros.sysusers b/macros.sysusers
index 6137da9..12c3e86 100644
--- a/macros.sysusers
+++ b/macros.sysusers
@@ -13,8 +13,7 @@
 #
 ###
 
-# This is for useradd/usermod/groupadd
-%sysusers_requires	Requires(pre): useradd_or_adduser_dep sysuser-shadow /usr/bin/cat \
+%sysusers_requires	Requires(pre): sysuser-shadow \
 Suggests:        shadow
 
 %sysusers_generate_pre()	\
diff --git a/sysuser-tools.changes b/sysuser-tools.changes
index bc020b3..65c1050 100644
--- a/sysuser-tools.changes
+++ b/sysuser-tools.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Sep 18 10:32:53 UTC 2020 - Fabian Vogt <fvogt@suse.com>
+
+- Avoid useless use of cat
+- Simplify %sysusers_requires
+- Drop shebang, rpm passes it to /bin/sh itself
+
 -------------------------------------------------------------------
 Fri Aug 21 15:09:13 UTC 2020 - Thorsten Kukuk <kukuk@suse.com>
 
diff --git a/sysusers-generate-pre b/sysusers-generate-pre
index 3a37819..4cc2620 100644
--- a/sysusers-generate-pre
+++ b/sysusers-generate-pre
@@ -1,8 +1,6 @@
 #!/bin/sh
 # pass systemd sysusers config paths as argument to this script.
 
-echo '#!/bin/sh'
-echo 'cat <<"EOF" |'
+echo '/usr/sbin/sysusers2shadow <<"EOF" || [ -f /.buildenv ]'
 grep -he '^[ugmr]' "$@"
 echo 'EOF'
-echo '/usr/sbin/sysusers2shadow || [ -f /.buildenv ]'
diff --git a/sysusers2shadow.sh b/sysusers2shadow.sh
index 33db91c..6440475 100644
--- a/sysusers2shadow.sh
+++ b/sysusers2shadow.sh
@@ -13,6 +13,7 @@ for i in /bin/busybox /usr/bin/busybox; do [ -x "$i" ] && busybox=$i; done
 
 while read LINE
 do
+	# "eval set" to do proper splitting while respecting quotes
 	eval set -- $LINE
 	case "${1-}" in
 	\#*|"")