diff --git a/virtualbox.changes b/virtualbox.changes
index 8a9b62a..c8dcf10 100644
--- a/virtualbox.changes
+++ b/virtualbox.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Fri Sep 18 16:36:31 UTC 2020 - Larry Finger <Larry.Finger@gmail.com>
+
+- %service_del_postun_without_restart is not yet available in Leap 15.{1,2} of SLE15_SP1.
+  For that reason, a workaround is added. 
+
+-------------------------------------------------------------------
+Fri Sep 11 17:58:07 UTC 2020 - Franck Bui <fbui@suse.com>
+
+- Make use of %service_del_postun_without_restart
+
+  And stop using DISABLE_RESTART_ON_UPDATE as this interface is
+  obsolete.
+
 -------------------------------------------------------------------
 Thu Sep 10 16:12:11 UTC 2020 - Larry Finger <Larry.Finger@gmail.com>
 
diff --git a/virtualbox.spec b/virtualbox.spec
index 9280920..3d31954 100644
--- a/virtualbox.spec
+++ b/virtualbox.spec
@@ -543,7 +543,7 @@ echo "SED = $RPM_BUILD_DIR/VirtualBox-%{version}/kmk_sed"  >> LocalConfig.kmk
 # fix build of vboxvideo kernel module: replace relative drm include path with absolute include path
 sed -i 's:include/drm:/usr/src/linux/include/drm:' src/VBox/Additions/linux/drm/Makefile.module.kms
 
-### %build, %install, and %file sections for virtualbox ###
+### %%build, %%install, and %%file sections for virtualbox ###
 %if %{main_package}
 %build
 # Disable LTO - Link Time Optimization
@@ -899,9 +899,14 @@ exit 0
 %restart_on_update vboxdrv
 %restart_on_update vboxautostart
 # immediately restarting virtualbox may not work. As such wait for the next reboot to restart
+%if ! %{defined service_del_postun_without_restart}
 export DISABLE_RESTART_ON_UPDATE=yes
 %service_del_postun vboxautostart.service
 %service_del_postun vboxdrv.service
+%else
+%service_del_postun_without_restart vboxautostart.service
+%service_del_postun_without_restart vboxdrv.service
+%endif
 
 %postun guest-tools
 %restart_on_update vboxadd
@@ -990,7 +995,7 @@ export DISABLE_RESTART_ON_UPDATE=yes
 %attr(0755,root,vboxusers) %{_vbox_instdir}/VBoxSUIDMessage
 %attr(0755,root,vboxusers) %{_vbox_instdir}/VBoxUSB_DevRules
 %attr(0755,root,vboxusers) %{_vbox_instdir}/VirtualBox6
-%verify(not mode) %attr(0755,root,vboxusers) %{_vbox_instdir}/VirtualBoxVM
+%verify(not mode) %attr(0750,root,vboxusers) %{_vbox_instdir}/VirtualBoxVM
 %verify(not mode) %attr(0755,root,vboxusers) %{_vbox_instdir}/VBoxSDL
 %{_vbox_instdir}/VirtualBox
 #wrapper script is in bindir
@@ -1092,7 +1097,7 @@ export DISABLE_RESTART_ON_UPDATE=yes
 # main_package
 %endif
 
-### %build and %install sections of virtualbox-kmp ### 
+### %%build and %%install sections of virtualbox-kmp ### 
 %if %{kmp_package}
 %build
 # Disable LTO - Link Time Optimization