diff --git a/pkgs/applications/science/biology/arb/default.nix b/pkgs/applications/science/biology/arb/default.nix
index 279091f21bd..2f622e94057 100644
--- a/pkgs/applications/science/biology/arb/default.nix
+++ b/pkgs/applications/science/biology/arb/default.nix
@@ -81,5 +81,6 @@ stdenv.mkDerivation {
     pkgMaintainer = "http://BioLib.open-bio.org/";
     homepage    = http://www.arb-home.de/;
     priority    = "10";   # because it includes binaries of clustal etc.
+    broken = true;
   };
 }