diff --git a/profiles/package.mask b/profiles/package.mask
index d7312897d52fc..5e8f95c015e22 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -30,6 +30,11 @@
 
 #--- END OF EXAMPLES ---
 
+# James Le Cuirot <chewi@gentoo.org> (03 Feb 2016)
+# Built into Java since 1.5. Ancient and doesn't build with
+# Java 8. Removal in 30 days. See bug #544038.
+dev-java/concurrent-util
+
 # James Le Cuirot <chewi@gentoo.org> (03 Feb 2016)
 # Old, unused, broken on Java 7 and up. These are still alive upstream
 # but bumping is likely non-trivial. Removal in 30 days.