diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 4212b1ba278f..353acd3bfcba 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -716,6 +716,9 @@ self: super: {
 
   llvm-general = super.llvm-general.override { llvm-config = pkgs.llvmPackages_34.llvm; };
 
+  # Tries to run GUI in tests
+  leksah = dontCheck super.leksah;
+
 } // {
 
   # Not on Hackage.