diff --git a/src/core/Benchmark.cpp b/src/core/Benchmark.cpp
index 549af7ea..3840bddc 100644
--- a/src/core/Benchmark.cpp
+++ b/src/core/Benchmark.cpp
@@ -29,6 +29,18 @@
 
 namespace xmrig {                          
 
+Benchmark::Benchmark() : m_controller(nullptr), m_isNewBenchRun(true) {
+  for (BenchAlgo bench_algo = static_cast<BenchAlgo>(0); bench_algo != BenchAlgo::MAX; bench_algo = static_cast<BenchAlgo>(bench_algo + 1)) {
+    m_bench_job[bench_algo] = new Job(false, Algorithm(ba2a[bench_algo]), "benchmark");
+  }
+}
+
+Benchmark::~Benchmark() {
+  for (BenchAlgo bench_algo = static_cast<BenchAlgo>(0); bench_algo != BenchAlgo::MAX; bench_algo = static_cast<BenchAlgo>(bench_algo + 1)) {
+    delete m_bench_job[bench_algo];
+  }
+}
+
 // start performance measurements from the first bench_algo
 void Benchmark::start() {
     JobResults::setListener(this); // register benchmark as job result listener to compute hashrates there
@@ -121,7 +133,7 @@ float Benchmark::get_algo_perf(Algorithm::Id algo) const {
 // start performance measurements for specified perf bench_algo
 void Benchmark::start(const BenchAlgo bench_algo) {
     // prepare test job for benchmark runs ("benchmark" client id is to make sure we can detect benchmark jobs)
-    static Job job(false, Algorithm(ba2a[bench_algo]), "benchmark");
+    Job& job = *m_bench_job[bench_algo];
     job.setId(Algorithm(ba2a[bench_algo]).shortName()); // need to set different id so that workers will see job change
     // 99 here to trigger all future bench_algo versions for auto veriant detection based on block version
     job.setBlob("9905A0DBD6BF05CF16E503F3A66F78007CBF34144332ECBFC22ED95C8700383B309ACE1923A0964B00000008BA939A62724C0D7581FCE5761E9D8A0E6A1C3F924FDD8493D1115649C05EB601");