diff --git a/pkgs/development/libraries/haskell/mtl/2.2.1.nix b/pkgs/development/libraries/haskell/mtl/2.2.1.nix
index 6589488edc0..8b8f77f2cdc 100644
--- a/pkgs/development/libraries/haskell/mtl/2.2.1.nix
+++ b/pkgs/development/libraries/haskell/mtl/2.2.1.nix
@@ -12,6 +12,7 @@ cabal.mkDerivation (self: {
     description = "Monad classes, using functional dependencies";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
+    hydraPlatforms = self.stdenv.lib.platforms.none;
     maintainers = [ self.stdenv.lib.maintainers.andres ];
   };
 })