diff --git a/jobsets.nix b/jobsets.nix
index 342cdeb..b938b0d 100644
--- a/jobsets.nix
+++ b/jobsets.nix
@@ -30,7 +30,7 @@ let
   jobsetsJson = pkgs.writeText "jobsets.json" (builtins.toJSON jobsets );
 in
 {
-  jobsets = pkgs.runCommand "spec.json" {} ''
-    ln -s ${jobsetsJson} $out
+  jobsets = pkgs.runCommand "jobsets.json" {} ''
+    cp ${jobsetsJson} $out
   '';
 }