diff --git a/flake.nix b/flake.nix
index bd563c0..4cba5d4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -109,7 +109,7 @@
         });
 
       hydraJobs = {
-          mlir."x86_64-linux" = self.packages.mlir;
+        mlir."x86_64-linux" = self.packages.${system}.mlir;
       };
 
       # The default package for 'nix build'. This makes sense if the