diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/default/linux/package.mask b/sdk_container/src/third_party/coreos-overlay/profiles/default/linux/package.mask
index 4a1e4af959..355fd5012f 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/default/linux/package.mask
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/default/linux/package.mask
@@ -16,3 +16,7 @@
 
 # Replaced by sys-apps/efunctions
 coreos-base/efunctions
+
+# There is a "new" sdk toolchain, which can properly build kexec-tools,
+# so mask the "binary" ebuild.
+sys-apps/kexec-tools-2.0.99
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-apps/kexec-tools/kexec-tools-2.0.99.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-apps/kexec-tools/kexec-tools-2.0.99.ebuild
deleted file mode 100644
index 4148177001..0000000000
--- a/sdk_container/src/third_party/coreos-overlay/sys-apps/kexec-tools/kexec-tools-2.0.99.ebuild
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright 1999-2013 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: /var/cvsroot/gentoo-x86/sys-apps/kexec-tools/kexec-tools-2.0.4-r1.ebuild,v 1.1 2013/03/30 13:01:49 jlec Exp $
-
-EAPI=2
-
-inherit eutils flag-o-matic
-
-DESCRIPTION="Load another kernel from the currently executing Linux kernel"
-HOMEPAGE="http://kernel.org/pub/linux/utils/kernel/kexec/"
-SRC_URI="http://beef.coreos.com/kexec"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="~amd64 ~x86"
-
-src_install() {
-	wget -O ${T}/kexec ${SRC_URI}
-	dosbin ${T}/kexec
-}