diff --git a/pkgs/tools/system/plan9port/default.nix b/pkgs/tools/system/plan9port/default.nix
index 74e3e11fbb5d..6b22dd5fe5ce 100644
--- a/pkgs/tools/system/plan9port/default.nix
+++ b/pkgs/tools/system/plan9port/default.nix
@@ -101,6 +101,7 @@ stdenv.mkDerivation {
       kovirobi
     ];
     platforms = platforms.unix;
+    broken = stdenv.isDarwin;
   };
 }
 # TODO: investigate the mouse chording support patch