diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index c34b97955a8f..4db3231590a5 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -72,6 +72,7 @@ in {
   maxima = linux;
   mercurial = allBut "i686-cygwin";
   mesa = linux;
+  mono = linux;
   monotone = linux;
   mysql = linux;
   nano = allBut "i686-cygwin";