diff --git a/README.md b/README.md
index 3a44bd8a6f0..2d0420c92fb 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,12 @@ $ make -C test/gtest test
OS distribution or build glibc from source using versions less than 2.25 or
greater than 2.29.
+* Due to compatibility flaw when using UCX with rdma-core v22 setting
+ UCX_DC_MLX5_RX_INLINE=0 is unsupported and will make DC transport unavailable.
+ This issue is fixed in rdma-core v24 and backported to rdma-core-22.4-2.el7 rpm.
+ See [ucx issue 5749](https://github.com/openucx/ucx/issues/5749) for more
+ details.
+
diff --git a/src/uct/ib/rc/accel/rc_mlx5_common.c b/src/uct/ib/rc/accel/rc_mlx5_common.c
index 76ac8b13d4a..73efff82b4d 100644
--- a/src/uct/ib/rc/accel/rc_mlx5_common.c
+++ b/src/uct/ib/rc/accel/rc_mlx5_common.c
@@ -1028,13 +1028,11 @@ void uct_rc_mlx5_common_fill_dv_qp_attr(uct_rc_mlx5_iface_common_t *iface,
unsigned scat2cqe_dir_mask)
{
#if HAVE_DECL_MLX5DV_QP_CREATE_ALLOW_SCATTER_TO_CQE
- dv_attr->comp_mask |= MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
- dv_attr->create_flags = 0;
-
if ((scat2cqe_dir_mask & UCS_BIT(UCT_IB_DIR_RX)) &&
(iface->super.super.config.max_inl_cqe[UCT_IB_DIR_RX] == 0)) {
/* make sure responder scatter2cqe is disabled */
dv_attr->create_flags |= MLX5DV_QP_CREATE_DISABLE_SCATTER_TO_CQE;
+ dv_attr->comp_mask |= MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
}
#endif
@@ -1053,6 +1051,7 @@ void uct_rc_mlx5_common_fill_dv_qp_attr(uct_rc_mlx5_iface_common_t *iface,
* unless it was already disabled on responder side (otherwise
* mlx5 driver check fails) */
dv_attr->create_flags |= MLX5DV_QP_CREATE_ALLOW_SCATTER_TO_CQE;
+ dv_attr->comp_mask |= MLX5DV_QP_INIT_ATTR_MASK_QP_CREATE_FLAGS;
}
#endif
}