diff --git a/nix/pkgs/heptapod-runner.nix b/nix/pkgs/heptapod-runner.nix
index ffa5548894..cf2523eb44 100644
--- a/nix/pkgs/heptapod-runner.nix
+++ b/nix/pkgs/heptapod-runner.nix
@@ -23,7 +23,7 @@ in
     paths = [ pkgs.mercurial ];
     postBuild = ''
       mkdir -p "$out/etc/mercurial"
-      cp "${newSrc}/dockerfiles/build/runner.hgrc" "$out/etc/mercurial/hgrc"
+      cp "${newSrc}/dockerfiles/runner-helper/runner.hgrc" "$out/etc/mercurial/hgrc"
     '';
   };
 }