diff --git a/src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp b/src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp
index ce944f2254d..e522163f980 100644
--- a/src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp
+++ b/src/hotspot/share/gc/g1/g1ConcurrentRefineSweepTask.cpp
@@ -35,8 +35,6 @@ class G1RefineRegionClosure : public G1HeapRegionClosure {
 
   uint _worker_id;
 
-  size_t _num_collections_at_start;
-
   bool has_work(G1HeapRegion* r) {
     return _scan_state->has_unclaimed_cards(r->hrm_index());
   }
@@ -189,4 +187,4 @@ void G1ConcurrentRefineSweepTask::work(uint worker_id) {
   _stats->add_atomic(&sweep_cl._refine_stats);
 }
 
-bool G1ConcurrentRefineSweepTask::sweep_completed() const { return _sweep_completed; }
\ No newline at end of file
+bool G1ConcurrentRefineSweepTask::sweep_completed() const { return _sweep_completed; }