diff --git a/src/hotspot/share/nmt/regionsTree.inline.hpp b/src/hotspot/share/nmt/regionsTree.inline.hpp
index 793a5c5f1fa..7f1714fb939 100644
--- a/src/hotspot/share/nmt/regionsTree.inline.hpp
+++ b/src/hotspot/share/nmt/regionsTree.inline.hpp
@@ -32,7 +32,6 @@ template<typename F>
 void RegionsTree::visit_committed_regions(const VirtualMemoryRegion& rgn, F func) {
   position start = (position)rgn.base();
   size_t end = reinterpret_cast<size_t>(rgn.end()) + 1;
-  size_t comm_size = 0;
 
   NodeHelper prev;
   visit_range_in_order(start, end, [&](Node* node) {