diff --git a/openmamba-lsb.spec b/openmamba-lsb.spec
index 1499a44..3c29031 100644
--- a/openmamba-lsb.spec
+++ b/openmamba-lsb.spec
@@ -18,13 +18,20 @@
 %define qual              ()(64bit)
 %endif
 
+%ifarch aarch64
+%define ldso              ld-linux-aarch64.so.1
+%define lsb_proginterp    /lib64/ld-lsb-aarch64.so.3
+%define lsb_archname      aarch64
+%define qual              ()(64bit)
+%endif
+
 # See:
 # https://ldn.linuxfoundation.org/lsb/lsb4-resource-page
 # http://www.linuxbase.org/navigator/browse/module.php
 
 Name:          openmamba-lsb
 Version:       4.1
-Release:       4mamba
+Release:       5mamba
 Summary:       Linux Standard Base Core (%{lsb_archname})
 Group:         System/Configuration
 Vendor:        openmamba
@@ -58,7 +65,6 @@ BuildRequires: libnspr-devel
 BuildRequires: libnss-devel
 BuildRequires: libpango-devel
 BuildRequires: libpng12-devel
-BuildRequires: libqt3-devel
 BuildRequires: libqt4-devel
 BuildRequires: libSM-devel
 BuildRequires: libstdc++6-devel
@@ -90,7 +96,7 @@ Provides:      lsb-%{lsb_archname} = %{version}
 Provides:      lsb-noarch = %{version}
 #
 Obsoletes:     lsb < 4.1
-ExclusiveArch: %{ix86} x86_64 ia64 arm
+ExclusiveArch: %{ix86} x86_64 ia64 arm aarch64
 BuildRoot:     %{_tmppath}/%{name}-%{version}-root
 
 %description
@@ -114,7 +120,7 @@ Obsoletes:     lsb-security
 Provides:      /usr/bin/lsb_release
 Provides:      /usr/lib/lsb/install_initd
 Provides:      /usr/lib/lsb/remove_initd
-Provides:      /lib/lsb/init-functions
+Provides:      /usr/lib/lsb/init-functions
 # See: <http://www.linuxbase.org/navigator/browse/module.php>
 # Module LSB-Core
 #  \ SubModule LSB_Core (Core LSB Specification)
@@ -333,12 +339,7 @@ Requires:      %{name}-core = %{?epoch:epoch:}%{version}-%{release}
 # See: <http://www.linuxbase.org/navigator/browse/module.php>
 # Module LSB-CXX
 #  \ SubModule LSB_Cpp (LSB C++ module)
-%ifarch %{ix86} arm
-Requires:      libstdc++.so.6
-%endif
-%ifarch x86_64
-Requires:      libstdc++.so.6()(64bit)
-%endif
+Requires:      libstdc++.so.6%{qual}
 
 %description cxx
 The goal of the Linux Standards Base (LSB) is to develop and promote a set of binary standards that will increase compatibility among Linux systems (and other similar systems), and enable software applications to run on any conforming system.
@@ -420,10 +421,6 @@ Requires:      libQtOpenGL.so.4%{qual}
 Requires:      libQtSql.so.4%{qual}
 Requires:      libQtSvg.so.4%{qual}
 
-# Module LSB-Desktop
-#  \ SubModule LSB_Toolkit_Qt3  (LSB Qt3 Toolkit module) ** Deprecated since LSB 3.2
-Requires:      libqt-mt.so.3%{qual}
-
 # Module LSB-Desktop
 #  \ SubModule LSB_XML (LSB XML module)
 Requires:      libxml2.so.2%{qual}
@@ -819,7 +816,6 @@ install -d %{buildroot}/sbin/
 install -d %{buildroot}/var/cache/fonts
 install -d %{buildroot}/var/games
 install -d %{buildroot}/%{_lib}
-install -d %{buildroot}/lib/lsb
 install -d %{buildroot}%{_prefix}/lib/lsb
 
 %makeoldinstall
@@ -838,10 +834,10 @@ for lsb_module in core desktop printing; do
    touch %{buildroot}%{_sysconfdir}/lsb-release.d/${lsb_module}-%{version}-%{lsb_archname}
 done
 
-install -m 644 %{S:1} %{buildroot}/lib/lsb/init-functions
+install -m 644 %{S:1} %{buildroot}%{_prefix}/lib/lsb/init-functions
 
-ln -snf ../../../sbin/chkconfig %{buildroot}/usr/lib/lsb/install_initd
-ln -snf ../../../sbin/chkconfig %{buildroot}/usr/lib/lsb/remove_initd
+ln -snf ../../../sbin/chkconfig %{buildroot}%{_prefix}/lib/lsb/install_initd
+ln -snf ../../../sbin/chkconfig %{buildroot}%{_prefix}/lib/lsb/remove_initd
 
 for lsbver in %{lsbsover}; do
    ln -s %{ldso} %{buildroot}%{lsb_proginterp}
@@ -864,10 +860,8 @@ EOF
 %defattr(-, root, root)
 %{_bindir}/lsb_release
 %{lsb_proginterp}
-%dir /lib/lsb
-/lib/lsb/init-functions
-%dir /usr/lib/lsb
-/usr/lib/lsb/*
+%dir %{_prefix}/lib/lsb
+%{_prefix}/lib/lsb/*
 %{_sysconfdir}/lsb-release
 %dir %{_sysconfdir}/lsb-release.d
 %{_sysconfdir}/lsb-release.d/core-*
@@ -889,6 +883,9 @@ EOF
 %{_sysconfdir}/lsb-release.d/printing-*
 
 %changelog
+* Thu Aug 01 2019 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1-5mamba
+- move /lib/lsb to /usr/lib/lsb for usr merge
+
 * Sun Nov 27 2016 Silvan Calarco <silvan.calarco@mambasoft.it> 4.1-4mamba
 - removed requirements for upstream obsoleted perl(CGI::Apache) and perl(CGI::Switch)