diff --git a/sys-devel/autoconf/autoconf264-2.64.recipe b/sys-devel/autoconf/autoconf264-2.64.recipe
index b8323a10f..bc0b8048b 100644
--- a/sys-devel/autoconf/autoconf264-2.64.recipe
+++ b/sys-devel/autoconf/autoconf264-2.64.recipe
@@ -10,7 +10,7 @@ SOURCE_URI="http://ftp.gnu.org/gnu/autoconf/autoconf-$portVersion.tar.bz2"
 CHECKSUM_SHA256="872f4cadf12e7e7c8a2414e047fdff26b517c7f1a977d72433c124d0d3acaa85"
 SOURCE_DIR="autoconf-$portVersion"
 REVISION="1"
-ARCHITECTURES="x86_gcc2 x86 x86_64"
+ARCHITECTURES="?x86_gcc2 ?x86 ?x86_64"
 LICENSE="
 	GNU GPL v2
 	GNU GPL v3"