diff --git a/sys/cam/ctl/ctl_tpc.c b/sys/cam/ctl/ctl_tpc.c
index 4197287dbdf..06263b365fb 100644
--- a/sys/cam/ctl/ctl_tpc.c
+++ b/sys/cam/ctl/ctl_tpc.c
@@ -942,14 +942,14 @@ tpc_process(struct tpc_list *list)
 
 done:
 //printf("ZZZ done\n");
+	free(list->params, M_CTL);
+	list->params = NULL;
 	mtx_lock(&lun->lun_lock);
 	if ((list->flags & EC_LIST_ID_USAGE_MASK) == EC_LIST_ID_USAGE_NONE) {
 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
 		free(list, M_CTL);
 	} else {
 		list->completed = 1;
-		free(list->params, M_CTL);
-		list->params = NULL;
 		list->sense_data = ctsio->sense_data;
 		list->sense_len = ctsio->sense_len;
 		list->scsi_status = ctsio->scsi_status;