--- old/src/hotspot/share/gc/shared/collectedHeap.hpp	2018-11-30 21:08:55.750937336 +0100
+++ new/src/hotspot/share/gc/shared/collectedHeap.hpp	2018-11-30 21:08:55.596938760 +0100
@@ -90,6 +90,7 @@
 //     CMSHeap
 //   G1CollectedHeap
 //   ParallelScavengeHeap
+//   ShenandoahHeap
 //   ZCollectedHeap
 //
 class CollectedHeap : public CHeapObj<mtInternal> {
@@ -176,7 +177,8 @@
     CMS,
     G1,
     Epsilon,
-    Z
+    Z,
+    Shenandoah
   };
 
   static inline size_t filler_array_max_size() {