diff --git a/postgresql.changes b/postgresql.changes
index 9e040e0..74ff649 100644
--- a/postgresql.changes
+++ b/postgresql.changes
@@ -1,3 +1,15 @@
+-------------------------------------------------------------------
+Fri Feb 22 07:46:53 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.
+
 -------------------------------------------------------------------
 Tue Feb 19 16:05:22 UTC 2019 - Reinhard Max <max@suse.com>
 
diff --git a/postgresql.spec b/postgresql.spec
index 28dcd2e..058310e 100644
--- a/postgresql.spec
+++ b/postgresql.spec
@@ -312,7 +312,7 @@ getent passwd postgres > /dev/null ||
 # Save the "enabled" and "active" state across the transition of
 # ownership of postgresql.service from postgresql-init to
 # postgresql-server.
-if [ "$FIRST_ARG" -ge 1 ]; then \
+if [ $1 -ge 1 ]; then \
 	if [ x$(systemctl is-enabled postgresql.service 2>/dev/null ||:) = "xenabled" ]; then
 		touch %eflag
 	fi