diff --git a/fluent-package/templates/package-scripts/fluent-package/deb/prerm b/fluent-package/templates/package-scripts/fluent-package/deb/prerm
index 37b6d9c4..83004fdd 100755
--- a/fluent-package/templates/package-scripts/fluent-package/deb/prerm
+++ b/fluent-package/templates/package-scripts/fluent-package/deb/prerm
@@ -33,18 +33,6 @@ esac
 # dh_installdeb will replace this with shell code automatically
 # generated by other debhelper scripts.
 
-. /etc/default/<%= service_name %>
-if [ "$FLUENT_PACKAGE_SERVICE_RESTART" = "manual" ]; then
-    # Do not stop service because removing package will be executed
-    # for major downgrade (e.g. uninstall v6 then reinstall v5)
-    # In such a case, missing plugins for v5 cause trouble in
-    # restarting service.
-    # so instead of restarting service here, demand users to install
-    # such plugins in advance then delegate users to restart service
-    # manually later.
-    :
-else
-    #DEBHELPER#
-fi
+#DEBHELPER#
 
 exit 0
diff --git a/fluent-package/yum/fluent-package.spec.in b/fluent-package/yum/fluent-package.spec.in
index 590dbb7d..ec5f56c2 100644
--- a/fluent-package/yum/fluent-package.spec.in
+++ b/fluent-package/yum/fluent-package.spec.in
@@ -197,18 +197,7 @@ if [ $1 -eq 2 ]; then
 fi
 
 %preun
-. %{_sysconfdir}/sysconfig/@SERVICE_NAME@
-echo "preun FLUENT_PACKAGE_SERVICE_RESTART: $FLUENT_PACKAGE_SERVICE_RESTART"
-if [ $1 -eq 0 ]; then
-  if [ "$FLUENT_PACKAGE_SERVICE_RESTART" = "manual" ]; then
-    # When rollback to previous version, there is a case that user want to
-    # restart manually to reduce downtime.
-    :
-  else
-    # disable service here
-    %systemd_preun @SERVICE_NAME@.service
-  fi
-fi
+%systemd_preun @SERVICE_NAME@.service
 
 %post
 . %{_sysconfdir}/sysconfig/@SERVICE_NAME@