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 e0046e86a7..9d0db3e236 100644
--- a/sdk_container/src/third_party/portage-stable/metadata/layout.conf
+++ b/sdk_container/src/third_party/portage-stable/metadata/layout.conf
@@ -1,4 +1,3 @@
-masters = gentoo chromiumos
 use-manifests = true
 thin-manifests = true
 cache-format = md5-dict