diff --git a/conf/modules.config b/conf/modules.config
index f969491..dc1a4c8 100644
--- a/conf/modules.config
+++ b/conf/modules.config
@@ -38,6 +38,10 @@ process {
         ext.args = { "--reverse -m${params.last_split_mismap}" }
     }
 
+    withName: 'LAST_TRAIN' {
+        ext.args = { "--revsym ${params.lastal_args}" }
+    }
+
     withName: 'LAST_LASTAL_M2O' {
         ext.prefix = { "${meta.id}.m2o_aln" }
         ext.args = { "--split-f=MAF+ ${params.lastal_args} ${params.lastal_extr_args}" }