diff --git a/src/tbb/arena.cpp b/src/tbb/arena.cpp
index 7e5bf44cbb..1f187a4589 100644
--- a/src/tbb/arena.cpp
+++ b/src/tbb/arena.cpp
@@ -291,7 +291,7 @@ arena::arena(threading_control* control, unsigned num_slots, unsigned num_reserv
 arena& arena::allocate_arena(threading_control* control, unsigned num_slots, unsigned num_reserved_slots,
                              unsigned priority_level
 #if __TBB_PREVIEW_PARALLEL_PHASE
-                             , tbb::task_arena::leave_policy wl
+                             , tbb::task_arena::leave_policy lp
 #endif
 )
 {
@@ -359,7 +359,7 @@ bool arena::has_enqueued_tasks() {
 
 void arena::request_workers(int mandatory_delta, int workers_delta, bool wakeup_threads) {
 #if __TBB_PREVIEW_PARALLEL_PHASE
-    my_thread_leave.restore_state_if_needed();
+    my_thread_leave.restore_default_policy_if_needed();
 #endif
     my_threading_control->adjust_demand(my_tc_client, mandatory_delta, workers_delta);
 
diff --git a/src/tbb/arena.h b/src/tbb/arena.h
index 6d52b27d09..2cf81dcaf2 100644
--- a/src/tbb/arena.h
+++ b/src/tbb/arena.h
@@ -220,7 +220,7 @@ class thread_leave_manager {
         do {
             if (prev & PARALLEL_PHASE_MASK) {
                 // The parallel phase is already started, thus simply add a reference to it
-                desired = PARALLEL_PHASE + prev;
+                desired = prev + PARALLEL_PHASE;
             } else if (prev == ONE_TIME_FAST_LEAVE) {
                 // State was previously transitioned to "One-time Fast leave", thus
                 // with the start of new parallel phase, it should be then transitioned to "Delayed leave"
diff --git a/src/tbb/waiters.h b/src/tbb/waiters.h
index 84f4c30ab5..a217933b7d 100644
--- a/src/tbb/waiters.h
+++ b/src/tbb/waiters.h
@@ -102,7 +102,7 @@ class outermost_worker_waiter : public waiter_base {
     using base_type = waiter_base;
 
     bool is_delayed_leave_enabled() {
- #if __TBB_PREVIEW_PARALLEL_PHASE
+#if __TBB_PREVIEW_PARALLEL_PHASE
        return my_arena.my_thread_leave.is_retention_allowed();
 #else
        return !governor::hybrid_cpu();
diff --git a/test/tbb/test_task_arena.cpp b/test/tbb/test_task_arena.cpp
index 78f1a1bd68..7033ffbe94 100644
--- a/test/tbb/test_task_arena.cpp
+++ b/test/tbb/test_task_arena.cpp
@@ -2095,7 +2095,8 @@ std::size_t measure_median_start_time(tbb::task_arena* ta, const F1& start = F1{
     auto get_longest_start = [&] (std::chrono::steady_clock::time_point start_time) {
         std::size_t longest_time = 0;
         for (auto& time : start_times) {
-            longest_time = std::max(longest_time, (std::size_t)std::chrono::duration_cast<std::chrono::microseconds>(time - start_time).count());
+            auto diff = std::chrono::duration_cast<std::chrono::microseconds>(time - start_time);
+            longest_time = std::max(longest_time, std::size_t(diff.count()));
         }
         return longest_time;
     };
@@ -2162,7 +2163,7 @@ class start_time_collection_phase_wrapped
     std::size_t measure_impl() {
         arena->start_parallel_phase();
         auto median_start_time = measure_median_start_time(arena);
-        arena->end_parallel_phase(true);
+        arena->end_parallel_phase(/*with_fast_leave*/true);
         return median_start_time;
     };
 };