diff -Nru sahara-dashboard-4.0.0/debian/changelog sahara-dashboard-4.0.0/debian/changelog
--- sahara-dashboard-4.0.0/debian/changelog	2018-03-07 14:36:46.000000000 +0000
+++ sahara-dashboard-4.0.0/debian/changelog	2018-03-15 13:24:45.000000000 +0000
@@ -1,3 +1,10 @@
+sahara-dashboard (4.0.0-1ubuntu1.1) xenial; urgency=medium
+
+  * d/python-sahara-dashboard.postinst: Align with openstack-dashboard
+    and use chown horizon instead of www-data (LP: #1755027).
+
+ -- Corey Bryant <corey.bryant@canonical.com>  Thu, 15 Mar 2018 09:24:45 -0400
+
 sahara-dashboard (4.0.0-1ubuntu1) xenial; urgency=medium
 
   * d/python-sahara-dashboard.postinst: Ensure .secret_key_store file
diff -Nru sahara-dashboard-4.0.0/debian/python-sahara-dashboard.postinst sahara-dashboard-4.0.0/debian/python-sahara-dashboard.postinst
--- sahara-dashboard-4.0.0/debian/python-sahara-dashboard.postinst	2018-03-07 14:35:58.000000000 +0000
+++ sahara-dashboard-4.0.0/debian/python-sahara-dashboard.postinst	2018-03-15 13:24:21.000000000 +0000
@@ -8,7 +8,9 @@
 	if [ -f '/var/lib/openstack-dashboard/secret-key/.secret_key_store' ]; then
 		rm -f /var/lib/openstack-dashboard/secret-key/.secret_key_store
 	fi
-	chown -R www-data /var/lib/openstack-dashboard/secret-key
+	if [ -e /var/lib/openstack-dashboard ] ; then
+		chown -R horizon:horizon /var/lib/openstack-dashboard
+	fi
 fi
 
 #DEBHELPER#