diff --git a/rmw_microxrcedds_c/src/rmw_init.c b/rmw_microxrcedds_c/src/rmw_init.c
index 96089b4b..9221eb90 100644
--- a/rmw_microxrcedds_c/src/rmw_init.c
+++ b/rmw_microxrcedds_c/src/rmw_init.c
@@ -55,7 +55,7 @@ rmw_init_options_init(
   init_options->implementation_identifier = eprosima_microxrcedds_identifier;
   init_options->allocator = allocator;
   init_options->enclave = NULL;
-  init_options->domain_id = 0;
+  init_options->domain_id = RMW_DEFAULT_DOMAIN_ID;
   init_options->security_options = rmw_get_default_security_options();
   init_options->localhost_only = RMW_LOCALHOST_ONLY_DEFAULT;
 
@@ -207,7 +207,8 @@ rmw_init(
     RMW_RET_INCORRECT_RMW_IMPLEMENTATION);
   context->instance_id = options->instance_id;
   context->implementation_identifier = eprosima_microxrcedds_identifier;
-  context->actual_domain_id = options->domain_id;
+  context->actual_domain_id =
+    (RMW_DEFAULT_DOMAIN_ID == options->domain_id) ? 0u : options->domain_id;
 
 #ifdef UCLIENT_PROFILE_MULTITHREAD
   if (!rmw_uxrce_wait_mutex_initialized) {
@@ -368,6 +369,9 @@ rmw_context_fini(
 {
   rmw_ret_t ret = RMW_RET_OK;
 
+  // Safety net against leaks if the app shuts down without destroying its nodes
+  // Nodes destroyed here make a later rcl_node_fini() return RMW_RET_ERROR, this
+  // is normally triggered by rclc_support_fini() -> rcl_shutdown() -> rmw_shutdown()
   rmw_uxrce_mempool_item_t * item = node_memory.allocateditems;
 
   while (item != NULL) {