diff --git a/dbus.spec b/dbus.spec
index fe9e40a..f9573f2 100644
--- a/dbus.spec
+++ b/dbus.spec
@@ -3,7 +3,7 @@
 
 Name:          dbus
 Version:       1.13.8
-Release:       3mamba
+Release:       4mamba
 Summary:       A message bus, used for sending messages between applications
 Group:         System/Servers
 Vendor:        openmamba
@@ -51,6 +51,7 @@ BuildRequires: xmlto
 Requires(pre): /usr/sbin/useradd
 Requires(pre): /sbin/chkconfig
 Requires(pre): filesystem >= 2.2-19mamba
+Requires(pre): shadow
 Requires:      lib%{name} = %{?epoch:%epoch:}%{version}-%{release}
 Provides:      dbus-tools
 Obsoletes:     dbus-tools
@@ -268,6 +269,9 @@ find /etc/rc[0-6].d/ -type l -xtype l -exec rm -f {} \;
 %{_docdir}/dbus/*
 
 %changelog
+* Sun Oct 06 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.13.8-4mamba
+- add Requires(pre): shadow to fix dbus-daemon-launch-helper permissions on live media
+
 * Sun Mar 17 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 1.13.8-3mamba
 - remove legacy /var/run/dbus symlink, require filesystem-2.2-19mamba for /run  switch