diff --git a/Formula/coreutils.rb b/Formula/coreutils.rb
index a99f529141272..45dae8016f0c6 100644
--- a/Formula/coreutils.rb
+++ b/Formula/coreutils.rb
@@ -13,6 +13,7 @@ class Coreutils < Formula
 
   conflicts_with "ganglia", :because => "both install `gstat` binaries"
   conflicts_with "idutils", :because => "both install `gid` and `gid.1`"
+  conflicts_with "aardvark_shell_utils", :because => "both install `realpath` binaries"
 
   head do
     url "git://git.sv.gnu.org/coreutils"