--- a/src/hotspot/share/gc/shared/gcName.hpp	Wed Nov 13 11:21:15 2019 +0100
+++ b/src/hotspot/share/gc/shared/gcName.hpp	Wed Nov 13 11:37:29 2019 +0100
@@ -33,9 +33,7 @@
   PSMarkSweep,
   ParallelScavenge,
   DefNew,
-  ParNew,
   G1New,
-  ConcurrentMarkSweep,
   G1Old,
   G1Full,
   Z,
@@ -53,9 +51,7 @@
       case PSMarkSweep: return "PSMarkSweep";
       case ParallelScavenge: return "ParallelScavenge";
       case DefNew: return "DefNew";
-      case ParNew: return "ParNew";
       case G1New: return "G1New";
-      case ConcurrentMarkSweep: return "ConcurrentMarkSweep";
       case G1Old: return "G1Old";
       case G1Full: return "G1Full";
       case Z: return "Z";