diff --git a/games-simulation/openttd/openttd-1.5.0.recipe b/games-simulation/openttd/openttd-1.5.1.recipe
similarity index 94%
rename from games-simulation/openttd/openttd-1.5.0.recipe
rename to games-simulation/openttd/openttd-1.5.1.recipe
index 3b45bc451..8d13166c2 100644
--- a/games-simulation/openttd/openttd-1.5.0.recipe
+++ b/games-simulation/openttd/openttd-1.5.1.recipe
@@ -7,11 +7,11 @@ features.
 "
 HOMEPAGE="http://www.openttd.org"
 SRC_URI="http://binaries.openttd.org/releases/$portVersion/openttd-$portVersion-source.tar.xz"
-CHECKSUM_SHA256="cb2735c3c94709430c58eb4e8820cd5d26b1a17447c34ca8792bb3432a3f7c2d"
+CHECKSUM_SHA256="c98e76e57de213c8d2ccafa4fa2e02b91c031b2487639ccf9b85c725c1428f49"
 COPYRIGHT="2005-2013 OpenTTD Team"
 LICENSE="GNU GPL v2"
 REVISION="1"
-ARCHITECTURES="x86"
+ARCHITECTURES="x86 x86_64"
 if [ $effectiveTargetArchitecture != x86_gcc2 ]; then
 	# x86_gcc2 is fine as primary target architecture as long as we're building
 	# for a different secondary architecture.
diff --git a/games-simulation/openttd/patches/openttd-1.5.0.patchset b/games-simulation/openttd/patches/openttd-1.5.1.patchset
similarity index 100%
rename from games-simulation/openttd/patches/openttd-1.5.0.patchset
rename to games-simulation/openttd/patches/openttd-1.5.1.patchset