diff --git a/Plugins/ExaTrkX/src/TorchTruthGraphMetricsHook.cpp b/Plugins/ExaTrkX/src/TorchTruthGraphMetricsHook.cpp
index 15b27ef79a9..cf1abbaa549 100644
--- a/Plugins/ExaTrkX/src/TorchTruthGraphMetricsHook.cpp
+++ b/Plugins/ExaTrkX/src/TorchTruthGraphMetricsHook.cpp
@@ -26,7 +26,7 @@ auto cantorize(std::vector<std::int64_t> edgeIndex,
     cantorEdgeIndex.emplace_back(*it, *std::next(it));
   }
 
-  std::ranges::sort(cantorEdgeIndex);
+  std::ranges::sort(cantorEdgeIndex, std::less<CantorEdge<std::int64_t>>{});
 
   auto new_end = std::unique(cantorEdgeIndex.begin(), cantorEdgeIndex.end());
   if (new_end != cantorEdgeIndex.end()) {