diff --git a/openmp/runtime/src/kmp_barrier.cpp b/openmp/runtime/src/kmp_barrier.cpp
--- a/openmp/runtime/src/kmp_barrier.cpp
+++ b/openmp/runtime/src/kmp_barrier.cpp
@@ -1443,6 +1443,8 @@
           kmp_flag_64<> flag(&child_bar->b_arrived, new_state);
           flag.wait(this_thr, FALSE USE_ITT_BUILD_ARG(itt_sync_obj));
           if (reduce) {
+            OMPT_REDUCTION_DECL(this_thr, gtid);
+            OMPT_REDUCTION_BEGIN;
             KA_TRACE(100, ("__kmp_hierarchical_barrier_gather: T#%d(%d:%d) += "
                            "T#%d(%d:%d)\n",
                            gtid, team->t.t_id, tid,
@@ -1450,6 +1452,7 @@
                            child_tid));
             (*reduce)(this_thr->th.th_local.reduce_data,
                       child_thr->th.th_local.reduce_data);
+            OMPT_REDUCTION_END;
           }
         }
       }
@@ -1472,6 +1475,8 @@
           kmp_flag_64<> flag(&child_bar->b_arrived, new_state);
           flag.wait(this_thr, FALSE USE_ITT_BUILD_ARG(itt_sync_obj));
           if (reduce) {
+            OMPT_REDUCTION_DECL(this_thr, gtid);
+            OMPT_REDUCTION_BEGIN;
             KA_TRACE(100, ("__kmp_hierarchical_barrier_gather: T#%d(%d:%d) += "
                            "T#%d(%d:%d)\n",
                            gtid, team->t.t_id, tid,
@@ -1479,6 +1484,7 @@
                            child_tid));
             (*reduce)(this_thr->th.th_local.reduce_data,
                       child_thr->th.th_local.reduce_data);
+            OMPT_REDUCTION_END;
           }
         }
       }