diff --git a/pkgs/tools/security/gencfsm/default.nix b/pkgs/tools/security/gencfsm/default.nix
index 8441fbbb7613..769729fa24a5 100644
--- a/pkgs/tools/security/gencfsm/default.nix
+++ b/pkgs/tools/security/gencfsm/default.nix
@@ -30,5 +30,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl2Plus;
     platforms = platforms.linux;
     maintainers = [ maintainers.spacefrogg ];
+    broken = true;
   };
 }