diff --git a/contrib/systemd/haproxy.service.in b/contrib/systemd/haproxy.service.in
index 74e66e302..138701223 100644
--- a/contrib/systemd/haproxy.service.in
+++ b/contrib/systemd/haproxy.service.in
@@ -3,10 +3,11 @@ Description=HAProxy Load Balancer
 After=network.target
 
 [Service]
+EnvironmentFile=-/etc/default/haproxy
 Environment="CONFIG=/etc/haproxy/haproxy.cfg" "PIDFILE=/run/haproxy.pid"
-ExecStartPre=@SBINDIR@/haproxy -f $CONFIG -c -q
-ExecStart=@SBINDIR@/haproxy -Ws -f $CONFIG -p $PIDFILE
-ExecReload=@SBINDIR@/haproxy -f $CONFIG -c -q
+ExecStartPre=@SBINDIR@/haproxy -f $CONFIG -c -q $EXTRAOPTS
+ExecStart=@SBINDIR@/haproxy -Ws -f $CONFIG -p $PIDFILE $EXTRAOPTS
+ExecReload=@SBINDIR@/haproxy -f $CONFIG -c -q $EXTRAOPTS
 ExecReload=/bin/kill -USR2 $MAINPID
 KillMode=mixed
 Restart=always