diff --git a/debian/gnome-theme-kali.postinst b/debian/gnome-theme-kali.postinst
new file mode 100644
index 00000000..1139aca0
--- /dev/null
+++ b/debian/gnome-theme-kali.postinst
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+set -e
+
+if [ "$1" = "configure" ] && dpkg --compare-versions "$2" lt-nl "2019.4"; then
+    # Cleanup diversion setup by former real package
+    dpkg-divert --rename --package gnome-theme-kali \
+		--divert /usr/share/gnome-shell/theme/gnome-shell.css.original \
+		--remove /usr/share/gnome-shell/theme/gnome-shell.css
+fi
+
+#DEBHELPER#