diff --git a/test/cctest/test_node_postmortem_metadata.cc b/test/cctest/test_node_postmortem_metadata.cc
index d4faec35adf..a6f7b9f3d0e 100644
--- a/test/cctest/test_node_postmortem_metadata.cc
+++ b/test/cctest/test_node_postmortem_metadata.cc
@@ -195,7 +195,8 @@ TEST_F(DebugSymbolsTest, ReqWrapList) {
   // ARM64 CI machinies.
   for (auto it : *(*env)->req_wrap_queue()) (void) ⁢
 
-  auto last = tail + nodedbg_offset_ListNode_ReqWrap__next___uintptr_t;
+  volatile uintptr_t last =
+      tail + nodedbg_offset_ListNode_ReqWrap__next___uintptr_t;
   last = *reinterpret_cast<uintptr_t*>(last);
 
   auto expected = reinterpret_cast<uintptr_t>(&obj);