1 files changed, 6 insertions, 4 deletions
diff --git a/src/mongo/db/pipeline/document_source_facet.h b/src/mongo/db/pipeline/document_source_facet.h
index 570e55b1907..bc8f8dad307 100644
--- a/src/mongo/db/pipeline/document_source_facet.h
+++ b/src/mongo/db/pipeline/document_source_facet.h
@@ -57,7 +57,7 @@ class NamespaceString;
  * stage which will produce a document like the following:
  * {facetA: [<all input documents except the first one>], facetB: [<the first document>]}.
  */
-class DocumentSourceFacet final : public DocumentSource {
+class DocumentSourceFacet final : public DocumentSource, public NeedsMergerDocumentSource {
 public:
     struct FacetPipeline {
         FacetPipeline(std::string name, std::unique_ptr<Pipeline, PipelineDeleter> pipeline)
@@ -126,9 +126,11 @@ public:
      * TODO SERVER-24154: Should be smarter about splitting so that parts of the sub-pipelines can
      * potentially be run in parallel on multiple shards.
      */
-    boost::optional<MergingLogic> mergingLogic() final {
-        // {shardsStage, mergingStage, sortPattern}
-        return MergingLogic{nullptr, this, boost::none};
+    boost::intrusive_ptr<DocumentSource> getShardSource() final {
+        return nullptr;
+    }
+    MergingLogic mergingLogic() final {
+        return {this};
     }
 
     const std::vector<FacetPipeline>& getFacetPipelines() const {