diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
index 1efedc7891..c658f142ee 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/base/make.defaults
@@ -90,7 +90,7 @@ CCACHE_DIR="/var/tmp/ccache"
 # Always build binary packages, remove old build logs, avoid running as root.
 FEATURES="buildpkg clean-logs compressdebug parallel-install splitdebug
           userfetch userpriv usersandbox ipc-sandbox network-sandbox
-          ccache -merge-sync"
+          -ccache -merge-sync"
 
 # No need to restrict access to build directories in dev environments.
 PORTAGE_WORKDIR_MODE="0755"