diff -r d22206f24d59 -r 0dab93cb3b0c src/hotspot/share/gc/g1/sparsePRT.hpp
--- a/src/hotspot/share/gc/g1/sparsePRT.hpp	Sun Jun 02 17:13:31 2019 -0400
+++ b/src/hotspot/share/gc/g1/sparsePRT.hpp	Mon Jun 03 10:50:14 2019 +0200
@@ -218,9 +218,7 @@
 
   RSHashTable* _table;
 
-  enum SomeAdditionalPrivateConstants {
-    InitialCapacity = 16
-  };
+  static const size_t InitialCapacity = 8;
 
   void expand();