diff --git a/i3lock-icon.png b/i3lock-icon.png
new file mode 100644
index 0000000..aee85c7
--- /dev/null
+++ b/i3lock-icon.png
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ba0ca359d5de4a7055ee9ad44b4b0b0d224521a21ea6c2974a7d579d1812f539
+size 30218
diff --git a/i3lock.changes b/i3lock.changes
index 62f3e35..83a3275 100644
--- a/i3lock.changes
+++ b/i3lock.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Mar 20 15:36:04 UTC 2014 - seife+obs@b1-systems.com
+
+- add i3lock-xlock-compat package which provides /usr/bin/xlock
+  for drop-in replacement in e.g. xflock4
+
 -------------------------------------------------------------------
 Mon Feb 17 08:01:39 UTC 2014 - seife+obs@b1-systems.com
 
diff --git a/i3lock.spec b/i3lock.spec
index a2f1f01..53355b9 100644
--- a/i3lock.spec
+++ b/i3lock.spec
@@ -29,6 +29,9 @@ License:        BSD-3-Clause
 Group:          System/GUI/Other
 Source:         http://i3wm.org/i3lock/i3lock-%{version}.tar.bz2
 Source1:        i3lock.pam
+# borrowed from gnome-icon-theme
+Source2:        i3lock-icon.png
+Source3:        xlock.sh
 # PATCH-FEATURE-OPENSUSE i3lock-2.5-use-unix2_chkpwd.diff -- seife+obs@b1-systems.com
 Patch1:         i3lock-2.5-use-unix2_chkpwd.diff
 Url:            http://i3wm.org/i3lock/
@@ -57,6 +60,17 @@ i3lock is a simple screen locker like slock. After starting it, you will see a
 white screen (you can configure the color/an image). You can return to your
 screen by entering your password.
 
+%package xlock-compat
+Summary:        xlock-compatibility script which calls i3lock
+Group:          System/GUI/Other
+Requires:       ImageMagick
+Conflicts:      xlockmore
+
+%description xlock-compat
+This package provides a script /usr/bin/xlock which calls i3lock to lock your screen.
+This is handy for hard-coded screen-saver invocations e.g. in XFCE4, so you can use
+i3lock instead of xlock with them.
+
 %prep
 %setup -q
 %patch1 -p1
@@ -82,9 +96,17 @@ install -m0644 "%{SOURCE1}" "%{buildroot}%{_sysconfdir}/pam.d/%{name}"
 
 install -D -m0644 i3lock.1 "%{buildroot}%{_mandir}/man1/i3lock.1"
 
+install -D -m0644 %{SOURCE2} %{buildroot}/usr/share/i3lock-xlock-compat/i3lock-icon.png
+install -m0755 %{SOURCE3} %{buildroot}/%{_bindir}/xlock
+
 %clean
 %{?buildroot:%__rm -rf "%{buildroot}"}
 
+%files xlock-compat
+%defattr(-,root,root)
+%{_bindir}/xlock
+/usr/share/i3lock-xlock-compat
+
 %files
 %defattr(-,root,root)
 %doc CHANGELOG LICENSE README
diff --git a/xlock.sh b/xlock.sh
new file mode 100644
index 0000000..7a51c90
--- /dev/null
+++ b/xlock.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+#
+XY=$(xdpyinfo |awk '/dimensions:/{print $2;exit}')
+CACHEFILE=${HOME}/.cache/xlock-sim/lock-$XY.png
+ICON=/usr/share/i3lock-xlock-compat/i3lock-icon.png
+if ! test -e $CACHEFILE || test $ICON -nt $CACHEFILE; then
+	install -d ${HOME}/.cache/xlock-sim
+	convert $ICON -background none -gravity center -extent $XY $CACHEFILE
+fi
+# not totally black, so that we can see something is happening even if convert failed
+exec /usr/bin/i3lock -n -c 444444 -i $CACHEFILE