diff --git a/profiles/package.mask b/profiles/package.mask
index 62171e9f8972f..235da39865cc5 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -32,6 +32,11 @@
 
 #--- END OF EXAMPLES ---
 
+# Miroslav Šulc <fordfrog@gentoo.org> (2021-04-21)
+# java library, no consumers
+# see: https://bugs.gentoo.org/784830
+dev-java/ant-owanttask
+
 # Ulrich Müller <ulm@gentoo.org> (2021-04-20)
 # Version 3.15 is broken with Emacs 27.2.
 =app-emacs/mic-paren-3.15-r0