diff a/src/hotspot/share/gc/shared/blockOffsetTable.hpp b/src/hotspot/share/gc/shared/blockOffsetTable.hpp
--- a/src/hotspot/share/gc/shared/blockOffsetTable.hpp
+++ b/src/hotspot/share/gc/shared/blockOffsetTable.hpp
@@ -39,11 +39,10 @@
 // operation may be important.  Implementations of the "BlockOffsetArray"
 // class may be useful in providing such efficient implementations.
 //
 // BlockOffsetTable (abstract)
 //   - BlockOffsetArray (abstract)
-//     - BlockOffsetArrayNonContigSpace
 //     - BlockOffsetArrayContigSpace
 //
 
 class ContiguousSpace;