diff -Nru haproxy-1.4.24/debian/changelog haproxy-1.4.24/debian/changelog
--- haproxy-1.4.24/debian/changelog	2015-07-22 18:12:26.000000000 +0200
+++ haproxy-1.4.24/debian/changelog	2015-09-23 17:49:32.000000000 +0200
@@ -1,3 +1,11 @@
+haproxy (1.4.24-2ubuntu0.3) trusty; urgency=medium
+
+  * debian/haproxy.init:
+    - Loops through all PIDs present in the PIDFILE when
+      nproc > 1 (LP: #1481737)
+
+ -- Louis Bouchard <louis.bouchard@ubuntu.com>  Wed, 23 Sep 2015 17:45:41 +0200
+
 haproxy (1.4.24-2ubuntu0.2) trusty; urgency=high
 
   * debian/haproxy.init:
diff -Nru haproxy-1.4.24/debian/haproxy.init haproxy-1.4.24/debian/haproxy.init
--- haproxy-1.4.24/debian/haproxy.init	2015-07-22 18:12:24.000000000 +0200
+++ haproxy-1.4.24/debian/haproxy.init	2015-09-23 18:11:22.000000000 +0200
@@ -30,6 +30,15 @@
 [ -f /etc/default/rcS ] && . /etc/default/rcS
 . /lib/lsb/init-functions
 
+clean()
+{
+if [ -e "$tmp" ];then
+	rm -f "$tmp"
+fi
+exit
+}
+
+trap clean EXIT
 
 check_haproxy_config()
 {
@@ -52,14 +61,19 @@
 
 haproxy_stop()
 {
+	tmp=$(tempfile -s .haproxy.init)
+
 	if [ ! -f $PIDFILE ] ; then
 		# This is a success according to LSB
 		return 0
 	fi
 
 	ret=0
-	start-stop-daemon --quiet --oknodo --stop \
-		--retry 5 --pidfile $PIDFILE --exec $HAPROXY || ret=$?
+	for pid in $(cat $PIDFILE); do
+		echo $pid > "$tmp"
+		start-stop-daemon --quiet --oknodo --stop \
+			--retry 5 --pidfile "$tmp" --exec $HAPROXY || ret=$?
+	done
 
 	[ $ret -eq 0 ] && rm -f $PIDFILE