diff --git a/debian/scripts/koha-functions.sh b/debian/scripts/koha-functions.sh
index 8687845aa5..082d3628fa 100755
--- a/debian/scripts/koha-functions.sh
+++ b/debian/scripts/koha-functions.sh
@@ -269,6 +269,7 @@ is_plack_running()
     local instancename=$1
 
     if start-stop-daemon --pidfile "/var/run/koha/${instancename}/plack.pid" \
+            --user="$instancename-koha" \
             --status ; then
         return 0
     else
@@ -292,6 +293,7 @@ is_z3950_running()
     local instancename=$1
 
     if start-stop-daemon --pidfile "/var/run/koha/${instancename}/z3950-responder.pid" \
+            --user="$instancename-koha" \
             --status ; then
         return 0
     else
diff --git a/debian/scripts/koha-plack b/debian/scripts/koha-plack
index e541d44178..90da6cbd36 100755
--- a/debian/scripts/koha-plack
+++ b/debian/scripts/koha-plack
@@ -144,7 +144,7 @@ stop_plack()
 
         log_daemon_msg "Stopping Plack daemon for ${instancename}"
 
-        if start-stop-daemon --pidfile ${PIDFILE} --stop --retry=TERM/30/KILL/5; then
+        if start-stop-daemon --pidfile ${PIDFILE} --user="${instancename}-koha" --stop --retry=TERM/30/KILL/5; then
             log_end_msg 0
         else
             log_end_msg 1