diff --git a/tigervnc.changes b/tigervnc.changes
index 37b91f2..fb7cb03 100644
--- a/tigervnc.changes
+++ b/tigervnc.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Feb  7 11:55:20 UTC 2020 - Stefan Dirsch <sndirsch@suse.com>
+
+- added a reference to bsc#1162951 about the reasoning why adding
+  the vnc user to the shadow group
+
 -------------------------------------------------------------------
 Wed Jan 15 11:42:20 UTC 2020 - Stefan Dirsch <sndirsch@suse.com>
 
diff --git a/tigervnc.spec b/tigervnc.spec
index 1dc1ed6..4a4b832 100644
--- a/tigervnc.spec
+++ b/tigervnc.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package tigervnc
 #
-# Copyright (c) 2020 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -407,6 +407,8 @@ fi
 
 getent group %{vncgroup} > /dev/null || groupadd -r %{vncgroup} || :
 getent passwd %{vncuser} > /dev/null || useradd -r -g %{vncgroup} -d /var/lib/empty -s /sbin/nologin -c "user for VNC" %{vncuser} || :
+# add vnc user to shadow group. (bsc#980326)
+# more details about the reasoning in bsc#1162951
 usermod -G shadow -a %{vncuser} || :
 
 %post -n xorg-x11-Xvnc