diff --git a/livecd-tools.spec b/livecd-tools.spec
index 5580d64..41c23de 100644
--- a/livecd-tools.spec
+++ b/livecd-tools.spec
@@ -1,9 +1,11 @@
 %define liveuser_uid 999
+%define packager_groupid  65028
+%define packager_userid  65028
 %define        lpadmin_uid 65032
 %define        lpadmin_gid 65032
 Name:          livecd-tools
 Version:       3.90.0
-Release:       1mamba
+Release:       2mamba
 Summary:       Live cd environment and utilities
 Group:         System/Tools
 Vendor:        openmamba
@@ -71,11 +73,14 @@ Calamares installer configuration for the openmamba distribution.
 
 %pre -n live-user-environment
 if [ $1 -eq 1 ]; then
-# add lpadmin user if cups is not installed before
+    # add package user if rpm package is not installed before
+    /usr/sbin/groupadd packager -g %{packager_groupid} 2>/dev/null || :
+    /usr/sbin/useradd packager -u %{packager_userid} -g packager -d /dev/null -s /bin/false 2>/dev/null || :
+    # add lpadmin user if cups is not installed before
    /usr/sbin/groupadd lpadmin -g %{lpadmin_gid} &>/dev/null
    /usr/sbin/useradd lpadmin -c "Cups printing daemon" -d /dev/null \
       -s /bin/false -u %{lpadmin_uid} -g %{lpadmin_gid} &>/dev/null
-# add default liveuser user
+   # add default liveuser user
    useradd liveuser \
       -c "Live User" \
       -G audio,filesharing,sysadmin,lpadmin,video,nopermfs,packager \
@@ -182,6 +187,9 @@ fi
 %attr(-,liveuser,users) /home/liveuser/.kde4/share/config/*
 
 %changelog
+* Sat Sep 02 2017 Silvan Calarco <silvan.calarco@mambasoft.it> 3.90.0-2mamba
+- create packager user/group in case it does not exist
+
 * Sat Dec 03 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 3.90.0-1mamba
 - update to 3.90.0