diff --git a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
index c4ba4b9cba7..f94d6e15b95 100644
--- a/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
+++ b/pkgs/development/haskell-modules/configuration-ghc-8.4.x.nix
@@ -120,7 +120,7 @@ self: super: {
     prePatch        = "cd lambdacube-ir.haskell; ";
   });
 
-  singletons = super.singletons_2_4_1;
+  singletons = dontCheck super.singletons_2_4_1;
   th-desugar = super.th-desugar_1_8;
 
   ## Upstreamed, awaiting a Hackage release