diff --git a/ConflictSet.cpp b/ConflictSet.cpp
index 5cec4ad..02fbe6d 100644
--- a/ConflictSet.cpp
+++ b/ConflictSet.cpp
@@ -1615,7 +1615,6 @@ Iterator firstGeq(Node *n, std::string_view key) {
 struct __attribute__((visibility("hidden"))) ConflictSet::Impl {
 
   void check(const ReadRange *reads, Result *result, int count) const {
-    Arena arena{64 << 10};
     for (int i = 0; i < count; ++i) {
       result[i] =
           reads[i].readVersion < oldestVersion ? TooOld