diff --git a/src/hotspot/share/gc/parallel/psPromotionManager.hpp b/src/hotspot/share/gc/parallel/psPromotionManager.hpp
index e9a4ba0479e..f7e741e554d 100644
--- a/src/hotspot/share/gc/parallel/psPromotionManager.hpp
+++ b/src/hotspot/share/gc/parallel/psPromotionManager.hpp
@@ -51,7 +51,10 @@ class ParCompactionManager;
 
 class PSPromotionManager {
   friend class PSScavenge;
+  friend class ScavengeRootsTask;
   friend class PSRefProcTaskExecutor;
+  friend class PSRefProcTask;
+
  private:
   static PaddedEnd<PSPromotionManager>* _manager_array;
   static OopStarTaskQueueSet*           _stack_array_depth;