diff -u check-mk-1.2.6p12/debian/changelog check-mk-1.2.6p12/debian/changelog
--- check-mk-1.2.6p12/debian/changelog
+++ check-mk-1.2.6p12/debian/changelog
@@ -1,3 +1,9 @@
+check-mk (1.2.6p12-1haw1) xenial; urgency=medium
+
+  * Added patch to fix downtime.h's scheduled_downtime_struct (LP: #1372284)
+
+ -- Haw Loeung <haw.loeung@canonical.com>  Fri, 17 Feb 2017 16:59:45 +1100
+
 check-mk (1.2.6p12-1) xenial; urgency=medium
 
   [ Matt Taggart ]
diff -u check-mk-1.2.6p12/debian/patches/00list check-mk-1.2.6p12/debian/patches/00list
--- check-mk-1.2.6p12/debian/patches/00list
+++ check-mk-1.2.6p12/debian/patches/00list
@@ -2,0 +3 @@
+03_fix_livestatus_downtime
only in patch2:
unchanged:
--- check-mk-1.2.6p12.orig/debian/patches/03_fix_livestatus_downtime.dpatch
+++ check-mk-1.2.6p12/debian/patches/03_fix_livestatus_downtime.dpatch
@@ -0,0 +1,23 @@
+#! /bin/sh /usr/share/dpatch/dpatch-run
+## 03_fix_livestatus_downtime.dpatch by Haw Loeung <haw.loeung@canonical.com>
+##
+## All lines beginning with `## DP:' are a description of the patch.
+## DP: Fix livestatus scheduled_downtime_struct - LP:1372284
+
+@DPATCH@
+
+--- pkg-check_mk/setup.sh	2017-02-17 16:22:29.871869640 +1100
++++ pkg-check_mk/setup.sh	2017-02-17 16:30:22.019025547 +1100
+@@ -569,6 +569,12 @@ compile_livestatus ()
+    tar xvzf $SRCDIR/livestatus.tar.gz -C $D
+    sed -i '/Boston/ a\
+ #include <cstddef>' livestatus.src/src/TableStatus.cc livestatus.src/src/TableLog.cc
++   sed -i '/time_t start_time;/ a\
++	time_t flex_downtime_start;' livestatus.src/nagios/downtime.h
++   sed -i '/int is_in_effect;/d' livestatus.src/nagios/downtime.h
++   sed -i '/unsigned long downtime_id;/ a\
++	int is_in_effect;; \
++	int     start_notification_sent;' livestatus.src/nagios/downtime.h
+    pushd $D
+ 
+    local CONFIGURE_OPTS=""