diff --git a/pkgs/build-support/docker/default.nix b/pkgs/build-support/docker/default.nix
index 4ebe3c0615d3..e06be51f4a4e 100644
--- a/pkgs/build-support/docker/default.nix
+++ b/pkgs/build-support/docker/default.nix
@@ -42,7 +42,7 @@ rec {
     cp ${./tarsum.go} tarsum.go
     export GOPATH=$(pwd)
     mkdir src
-    ln -sT ${docker.src}/pkg/tarsum src/tarsum
+    ln -sT ${docker.src}/components/engine/pkg/tarsum src/tarsum
     go build
 
     cp tarsum $out