diff --git a/ompi/mca/pml/ucx/pml_ucx.h b/ompi/mca/pml/ucx/pml_ucx.h
index 8a696e8111..d684ecb462 100644
--- a/ompi/mca/pml/ucx/pml_ucx.h
+++ b/ompi/mca/pml/ucx/pml_ucx.h
@@ -69,13 +69,15 @@ extern mca_pml_ucx_module_t ompi_pml_ucx;
     _PML_UCX_QUOTE(_x)
 
 #define PML_UCX_ERROR(...) \
-    opal_output_verbose(0, ompi_pml_ucx.output, "Error: " __FILE__ ":" \
-                        PML_UCX_QUOTE(__LINE__) __VA_ARGS__)
+    opal_output_verbose(0, ompi_pml_ucx.output, \
+                        __FILE__ ":" PML_UCX_QUOTE(__LINE__) \
+                        " Error: " __VA_ARGS__)
 
 #define PML_UCX_VERBOSE(_level, ... ) \
     if (((_level) <= PML_UCX_MAX_VERBOSE) && ((_level) <= ompi_pml_ucx.verbose)) { \
-        opal_output_verbose(_level, ompi_pml_ucx.output, __FILE__ ":" \
-                            PML_UCX_QUOTE(__LINE__) __VA_ARGS__); \
+        opal_output_verbose(_level, ompi_pml_ucx.output, \
+                            __FILE__ ":" PML_UCX_QUOTE(__LINE__) " " \
+                            __VA_ARGS__); \
     }
 
 int mca_pml_ucx_open(void);
diff --git a/ompi/mca/pml/ucx/pml_ucx_request.c b/ompi/mca/pml/ucx/pml_ucx_request.c
index e1ad331c90..2fca2a6144 100644
--- a/ompi/mca/pml/ucx/pml_ucx_request.c
+++ b/ompi/mca/pml/ucx/pml_ucx_request.c
@@ -108,11 +108,10 @@ static void mca_pml_ucx_request_init_common(ompi_request_t* ompi_req,
                                             ompi_request_free_fn_t req_free,
                                             ompi_request_cancel_fn_t req_cancel)
 {
+    OBJ_CONSTRUCT(ompi_req, ompi_request_t);
     OMPI_REQUEST_INIT(ompi_req, req_persistent);
     ompi_req->req_type             = OMPI_REQUEST_PML;
     ompi_req->req_state            = state;
-    ompi_req->req_complete_cb      = NULL;
-    ompi_req->req_complete_cb_data = NULL;
     ompi_req->req_free             = req_free;
     ompi_req->req_cancel           = req_cancel;
 }
@@ -128,6 +127,7 @@ void mca_pml_ucx_request_cleanup(void *request)
 {
     ompi_request_t* ompi_req = request;
     OMPI_REQUEST_FINI(ompi_req);
+    OBJ_DESTRUCT(ompi_req);
 }
 
 static int mca_pml_ucx_persistent_request_free(ompi_request_t **rptr)