diff -uNr check-mk.orig/setup.sh check-mk/setup.sh
--- check-mk.orig/setup.sh	2017-05-24 11:38:06.852000000 +0200
+++ check-mk/setup.sh	2017-05-24 11:38:31.000000000 +0200
@@ -745,28 +745,11 @@
 	return
     fi
 
-    sudolines="Defaults:$wwwuser !requiretty\n$wwwuser ALL = (root) NOPASSWD: $bindir/check_mk --automation *"
-
-    if [ ! -e /etc/sudoers ] ; then
-        echo "You do not have sudo installed. Please install sudo "
-        echo "and add the following line to /etc/sudoers if you want"
-        echo "to use WATO - the Check_MK Web Administration Tool"
-        echo
-        echo -e "$sudolines"
-        echo
-        echo
-        return
-    fi
-
-    if fgrep -q 'check_mk --automation' /etc/sudoers 2>/dev/null
-    then
-        # already present. Do not touch.
-        return
-    fi
-
-    echo >> /etc/sudoers
-    echo "# Needed for  WATO - the Check_MK Web Administration Tool" >> /etc/sudoers
-    echo -e "$sudolines" >> /etc/sudoers
+    sudolines="Defaults:$wwwuser !requiretty\n$wwwuser ALL = (nagios) NOPASSWD: $bindir/check_mk --automation *"
+    mkdir -p $DESTDIR/etc/sudoers.d
+    echo >> $DESTDIR/etc/sudoers.d/check_mk_wato
+    echo "# Needed for  WATO - the Check_MK Web Administration Tool" >> $DESTDIR/etc/sudoers.d/check_mk_wato
+    echo -e "$sudolines" >> $DESTDIR/etc/sudoers.d/check_mk_wato
 }
 
 while true