diff --git a/test/cctest/test_node_postmortem_metadata.cc b/test/cctest/test_node_postmortem_metadata.cc
index 4cee7db4c8ee5b..d7591f03b07659 100644
--- a/test/cctest/test_node_postmortem_metadata.cc
+++ b/test/cctest/test_node_postmortem_metadata.cc
@@ -194,7 +194,8 @@ 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);