diff --git a/test/gtest/ucg/test_cb.cc b/test/gtest/ucg/test_cb.cc
index 863715b75ef..5fc0dd1eb87 100644
--- a/test/gtest/ucg/test_cb.cc
+++ b/test/gtest/ucg/test_cb.cc
@@ -33,6 +33,8 @@ ucg_builtin_request_t* ucg_cb_test::create_request(ucg_builtin_op_step_t *step)
     comp_req->status = UCS_OK;
     req->comp_req = comp_req;
     ucg_builtin_op_t *op = new ucg_builtin_op_t;
+    op->send_dt = NULL;
+    op->recv_dt = NULL;
     op->final_cb = NULL;
     req->op = op;
 
diff --git a/test/gtest/ucg/test_step.cc b/test/gtest/ucg/test_step.cc
index c43990e1f96..ca23ee060cc 100644
--- a/test/gtest/ucg/test_step.cc
+++ b/test/gtest/ucg/test_step.cc
@@ -35,6 +35,8 @@ ucg_builtin_comp_slot_t *ucg_step_test::create_slot(ucg_builtin_op_step_t *step)
     comp_req->status = UCS_OK;
     req->comp_req = comp_req;
     ucg_builtin_op_t *op = new ucg_builtin_op_t;
+    op->send_dt = NULL;
+    op->recv_dt = NULL;
     op->final_cb = NULL;
     req->op = op;