diff --git a/dnsmasq.changes b/dnsmasq.changes
index 0100e92..0e19708 100644
--- a/dnsmasq.changes
+++ b/dnsmasq.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Fri Feb 22 07:10:51 UTC 2019 - Franck Bui <fbui@suse.com>
+
+- Drop use of $FIRST_ARG in .spec
+
+  The use of $FIRST_ARG was probably required because of the
+  %service_* rpm macros were playing tricks with the shell positional
+  parameters. This is bad practice and error prones so let's assume
+  that no macros should do that anymore and hence it's safe to assume
+  that positional parameters remains unchanged after any rpm macro
+  call.
+
 -------------------------------------------------------------------
 Wed Jan 23 23:03:22 UTC 2019 - Cristian Rodríguez <crrodriguez@opensuse.org>
 
diff --git a/dnsmasq.spec b/dnsmasq.spec
index 17d8299..1e2c952 100644
--- a/dnsmasq.spec
+++ b/dnsmasq.spec
@@ -136,7 +136,7 @@ fi
 %postun
 %service_del_postun %{name}.service
 # reload dbus after uninstall, our policies are gone again
-if [ ${FIRST_ARG:-$1} -eq 0 -a -z "${TRANSACTIONAL_UPDATE}" \
+if [ $1 -eq 0 -a -z "${TRANSACTIONAL_UPDATE}" \
      -a -x /usr/bin/systemctl ]; then
         /usr/bin/systemctl reload dbus.service 2>/dev/null || :
 fi