diff --git a/dev-util/boost_build/boost_build-1.64.0.recipe b/dev-util/boost_build/boost_build-1.64.0.recipe
index e8553406f..96d9b5d33 100644
--- a/dev-util/boost_build/boost_build-1.64.0.recipe
+++ b/dev-util/boost_build/boost_build-1.64.0.recipe
@@ -7,13 +7,13 @@ Windows, OSX, Linux and commercial UNIX systems."
 HOMEPAGE="https://www.boost.org/build/index.html"
 COPYRIGHT="2006, 2014 Vladimir Prus"
 LICENSE="Boost v1.0"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://github.com/boostorg/build/archive/boost-$portVersion.tar.gz"
 CHECKSUM_SHA256="08df6f0e32c59e51a134e598b29a3dacb415a58e4494635b82a071d43a1e3631"
 SOURCE_DIR="build-boost-$portVersion"
 PATCHES="boost_build-$portVersion.patchset"
 
-ARCHITECTURES="?all x86_gcc2"
+ARCHITECTURES="all x86_gcc2"
 SECONDARY_ARCHITECTURES="x86"
 
 PROVIDES="