diff --git a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/targets/generic/make.defaults b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/targets/generic/make.defaults
index 65d685906b..505f8124de 100644
--- a/sdk_container/src/third_party/coreos-overlay/profiles/coreos/targets/generic/make.defaults
+++ b/sdk_container/src/third_party/coreos-overlay/profiles/coreos/targets/generic/make.defaults
@@ -36,13 +36,6 @@ INSTALL_MASK="${INSTALL_MASK}
   /etc/xinetd.d
 "
 
-# Exclude ustr's source code and debug library
-INSTALL_MASK="${INSTALL_MASK}
-  /usr/bin/ustr-import
-  /usr/lib*/libustr-debug*
-  /usr/share/ustr-*
-"
-
 # Remove selinuxenabled because it triggers breakage in Ansible
 INSTALL_MASK="${INSTALL_MASK}
   /usr/sbin/selinuxenabled