diff -Nru sgt-puzzles-20160429.b31155b/debian/changelog sgt-puzzles-20160429.b31155b/debian/changelog
--- sgt-puzzles-20160429.b31155b/debian/changelog	2016-07-20 00:34:44.000000000 +0000
+++ sgt-puzzles-20160429.b31155b/debian/changelog	2017-01-11 09:19:09.000000000 +0000
@@ -1,3 +1,9 @@
+sgt-puzzles (20160429.b31155b-1ubuntu1) zesty; urgency=medium
+
+  * Avoid FTBFS by building with -O2 on ppc64el
+
+ -- Graham Inggs <ginggs@ubuntu.com>  Wed, 11 Jan 2017 11:19:09 +0200
+
 sgt-puzzles (20160429.b31155b-1) unstable; urgency=medium
 
   * New upstream version (Closes: #791982)
diff -Nru sgt-puzzles-20160429.b31155b/debian/control sgt-puzzles-20160429.b31155b/debian/control
--- sgt-puzzles-20160429.b31155b/debian/control	2016-02-20 18:08:58.000000000 +0000
+++ sgt-puzzles-20160429.b31155b/debian/control	2017-01-11 09:19:09.000000000 +0000
@@ -1,5 +1,6 @@
 Source: sgt-puzzles
-Maintainer: Ben Hutchings <ben@decadent.org.uk>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Ben Hutchings <ben@decadent.org.uk>
 Section: games
 Priority: extra
 Build-Depends: debhelper (>= 7.0.50~), halibut, libgtk2.0-dev, liblocale-po-perl, perl, po4a, autoconf, automake
diff -Nru sgt-puzzles-20160429.b31155b/debian/rules sgt-puzzles-20160429.b31155b/debian/rules
--- sgt-puzzles-20160429.b31155b/debian/rules	2016-06-30 13:53:42.000000000 +0000
+++ sgt-puzzles-20160429.b31155b/debian/rules	2017-01-11 09:19:09.000000000 +0000
@@ -14,6 +14,10 @@
 		 depcomp install-sh list.c missing preprocessed.but \
 		 puzzles.cnt puzzles.hlp puzzles.txt
 
+ifeq ($(DEB_HOST_ARCH), ppc64el)
+CFLAGS := $(filter-out -O3,$(CFLAGS)) -O2
+endif
+
 %:
 	dh $@