diff --git a/bolt/src/Passes/ReorderAlgorithm.cpp b/bolt/src/Passes/ReorderAlgorithm.cpp
index 1ee35edab433..e4f73290c9c0 100644
--- a/bolt/src/Passes/ReorderAlgorithm.cpp
+++ b/bolt/src/Passes/ReorderAlgorithm.cpp
@@ -434,7 +434,7 @@ void TSPReorderAlgorithm::reorderBasicBlocks(
 
   std::vector<std::vector<int64_t>> DP;
   DP.resize(1 << N);
-  for (std::vector<long> &Elmt : DP) {
+  for (std::vector<int64_t> &Elmt : DP) {
     Elmt.resize(N, -1);
   }
   // Start with the entry basic block being allocated with cost zero