1 files changed, 4 insertions, 0 deletions
diff --git a/src/mongo/db/update/unset_node.h b/src/mongo/db/update/unset_node.h
index 7cdae9f8dac..7a773a821aa 100644
--- a/src/mongo/db/update/unset_node.h
+++ b/src/mongo/db/update/unset_node.h
@@ -66,6 +66,10 @@ public:
         return true;
     }
 
+    void acceptVisitor(UpdateNodeVisitor* visitor) final {
+        visitor->visit(this);
+    }
+
 private:
     StringData operatorName() const final {
         return "$unset";