diff --git a/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.cpp b/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.cpp
index 3e255c15a4e0a..ed35bd8970dc8 100644
--- a/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.cpp
+++ b/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.cpp
@@ -51,7 +51,6 @@ PSAdaptiveSizePolicy::PSAdaptiveSizePolicy(size_t init_eden_size,
      _avg_major_pause(new AdaptivePaddedAverage(AdaptiveTimeWeight, PausePadding)),
      _avg_base_footprint(new AdaptiveWeightedAverage(AdaptiveSizePolicyWeight)),
      _gc_stats(),
-     _collection_cost_margin_fraction(AdaptiveSizePolicyCollectionCostMargin / 100.0),
      _major_pause_old_estimator(new LinearLeastSquareFit(AdaptiveSizePolicyWeight)),
      _major_pause_young_estimator(new LinearLeastSquareFit(AdaptiveSizePolicyWeight)),
      _latest_major_mutator_interval_seconds(0),
diff --git a/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.hpp b/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.hpp
index 1ffd9a49dcad9..2cf488cc988a4 100644
--- a/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.hpp
+++ b/src/hotspot/share/gc/parallel/psAdaptiveSizePolicy.hpp
@@ -75,8 +75,6 @@ class PSAdaptiveSizePolicy : public AdaptiveSizePolicy {
   // Statistical data gathered for GC
   GCStats _gc_stats;
 
-  const double _collection_cost_margin_fraction;
-
   // Variable for estimating the major and minor pause times.
   // These variables represent linear least-squares fits of
   // the data.