diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.10.1-r1.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.10.1-r1.ebuild
index ae6476cea9..17bc304cb5 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.10.1-r1.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.10.1-r1.ebuild
@@ -7,6 +7,7 @@ CROS_WORKON_COMMIT="60757f78d6dbd86e935b4de43d61547174228cb7"
 CROS_WORKON_REPO="git://github.com"
 CROS_WORKON_PROJECT="coreos/linux"
 CROS_WORKON_LOCALNAME="linux"
+CROS_WORKON_OUTOFTREE_BUILD=0
 inherit cros-workon cros-kernel2
 
 DEPEND="
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.5-r2.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.5-r2.ebuild
index 6343228875..87a560b221 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.5-r2.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.5-r2.ebuild
@@ -8,6 +8,7 @@ CROS_WORKON_TREE="0ff44b050e7f57e7d3743a44af2c9211da30bdb4"
 CROS_WORKON_REPO="git://github.com"
 CROS_WORKON_PROJECT="coreos/linux"
 CROS_WORKON_LOCALNAME="linux"
+CROS_WORKON_OUTOFTREE_BUILD=0
 inherit cros-workon cros-kernel2
 
 DEPEND="
diff --git a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.8.ebuild b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.8.ebuild
index 727a69f679..88ecc0b17a 100644
--- a/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.8.ebuild
+++ b/sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-kernel/coreos-kernel-3.9.8.ebuild
@@ -8,6 +8,7 @@ CROS_WORKON_TREE="0ff44b050e7f57e7d3743a44af2c9211da30bdb4"
 CROS_WORKON_REPO="git://github.com"
 CROS_WORKON_PROJECT="coreos/linux"
 CROS_WORKON_LOCALNAME="linux"
+CROS_WORKON_OUTOFTREE_BUILD=0
 inherit cros-workon cros-kernel2
 
 DEPEND="