diff --git a/subsys/bluetooth/controller/ll_sw/ull.c b/subsys/bluetooth/controller/ll_sw/ull.c
index 79b3ea89a5f..c7fc25603cf 100644
--- a/subsys/bluetooth/controller/ll_sw/ull.c
+++ b/subsys/bluetooth/controller/ll_sw/ull.c
@@ -1650,6 +1650,9 @@ void ll_rx_mem_release(void **node_rx)
 				conn->lll.link_tx_free = link;
 
 				ll_conn_release(conn);
+			} else if (IS_CIS_HANDLE(rx_free->handle)) {
+				ll_rx_link_quota_inc();
+				ll_rx_release(rx_free);
 			}
 		}
 		break;