diff --git a/src/transport/multicast/rx.c b/src/transport/multicast/rx.c
index 0f1d9a1a6..9fb789045 100644
--- a/src/transport/multicast/rx.c
+++ b/src/transport/multicast/rx.c
@@ -282,9 +282,13 @@ int8_t _z_multicast_handle_transport_message(_z_transport_multicast_t *ztm, _z_t
 #else
                         entry->_dbuf_reliable = _z_wbuf_make(Z_FRAG_MAX_SIZE, false);
                         entry->_dbuf_best_effort = _z_wbuf_make(Z_FRAG_MAX_SIZE, false);
+
+                        if ((_z_wbuf_capacity(&entry->_dbuf_reliable) != Z_FRAG_MAX_SIZE) ||
+                            (_z_wbuf_capacity(&entry->_dbuf_best_effort) != Z_FRAG_MAX_SIZE)) {
+                            _Z_ERROR("Not enough memory to allocate peer defragmentation buffers!");
+                        }
 #endif
 #endif
-
                         // Update lease time (set as ms during)
                         entry->_lease = t_msg->_body._join._lease;
                         entry->_next_lease = entry->_lease;
diff --git a/src/transport/multicast/transport.c b/src/transport/multicast/transport.c
index 0ffaa0bb6..f7c07a61a 100644
--- a/src/transport/multicast/transport.c
+++ b/src/transport/multicast/transport.c
@@ -76,6 +76,7 @@ int8_t _z_multicast_transport_create(_z_transport_t *zt, _z_link_t *zl,
         // Clean up the buffers if one of them failed to be allocated
         if ((_z_wbuf_capacity(&ztm->_wbuf) != mtu) || (_z_zbuf_capacity(&ztm->_zbuf) != Z_BATCH_MULTICAST_SIZE)) {
             ret = _Z_ERR_SYSTEM_OUT_OF_MEMORY;
+            _Z_ERROR("Not enough memory to allocate transport tx rx buffers!");
 
 #if Z_FEATURE_MULTI_THREAD == 1
             zp_mutex_free(&ztm->_mutex_tx);
diff --git a/src/transport/unicast/transport.c b/src/transport/unicast/transport.c
index 3dd7b49a4..b919e3339 100644
--- a/src/transport/unicast/transport.c
+++ b/src/transport/unicast/transport.c
@@ -83,6 +83,7 @@ int8_t _z_unicast_transport_create(_z_transport_t *zt, _z_link_t *zl, _z_transpo
         if ((_z_wbuf_capacity(&zt->_transport._unicast._wbuf) != wbuf_size) ||
             (_z_zbuf_capacity(&zt->_transport._unicast._zbuf) != zbuf_size)) {
             ret = _Z_ERR_SYSTEM_OUT_OF_MEMORY;
+            _Z_ERROR("Not enough memory to allocate transport tx rx buffers!");
 
 #if Z_FEATURE_MULTI_THREAD == 1
             zp_mutex_free(&zt->_transport._unicast._mutex_tx);
@@ -108,6 +109,7 @@ int8_t _z_unicast_transport_create(_z_transport_t *zt, _z_link_t *zl, _z_transpo
             (_z_wbuf_capacity(&zt->_transport._unicast._dbuf_best_effort) != Z_IOSLICE_SIZE)) {
 #endif
             ret = _Z_ERR_SYSTEM_OUT_OF_MEMORY;
+            _Z_ERROR("Not enough memory to allocate transport defragmentation buffers!");
 
             _z_wbuf_clear(&zt->_transport._unicast._dbuf_reliable);
             _z_wbuf_clear(&zt->_transport._unicast._dbuf_best_effort);