diff --git a/sdk_container/src/third_party/portage-stable/metadata/layout.conf b/sdk_container/src/third_party/portage-stable/metadata/layout.conf
index 854b0beda8..63c9d88b10 100644
--- a/sdk_container/src/third_party/portage-stable/metadata/layout.conf
+++ b/sdk_container/src/third_party/portage-stable/metadata/layout.conf
@@ -1,3 +1,3 @@
 masters = gentoo portage-stable chromiumos
 use-manifests = true
-thin-manifest = true
+thin-manifests = true