diff --git a/src/hotspot/share/gc/shared/referenceProcessor.hpp b/src/hotspot/share/gc/shared/referenceProcessor.hpp
index f0dfd1d1bd9..af766572b13 100644
--- a/src/hotspot/share/gc/shared/referenceProcessor.hpp
+++ b/src/hotspot/share/gc/shared/referenceProcessor.hpp
@@ -601,28 +601,6 @@ class ReferenceProcessorAtomicMutator: StackObj {
   }
 };
 
-
-// A utility class to temporarily change the MT processing
-// disposition of the given ReferenceProcessor instance
-// in the scope that contains it.
-class ReferenceProcessorMTProcMutator: StackObj {
- private:
- ReferenceProcessor* _rp;
- bool _saved_mt;
-
- public:
- ReferenceProcessorMTProcMutator(ReferenceProcessor* rp,
- bool mt):
- _rp(rp) {
- _saved_mt = _rp->processing_is_mt();
- _rp->set_mt_processing(mt);
- }
-
- ~ReferenceProcessorMTProcMutator() {
- _rp->set_mt_processing(_saved_mt);
- }
-};
-
 // This class is an interface used to implement task execution for the
 // reference processing.
 class AbstractRefProcTaskExecutor {