diff --git a/modules/local/generate_config.nf b/modules/local/generate_config.nf
index 5cf08eda..3aab7ee9 100644
--- a/modules/local/generate_config.nf
+++ b/modules/local/generate_config.nf
@@ -10,7 +10,7 @@ process GENERATE_CONFIG {
     val taxon_query
     val busco_lin
     path lineage_tax_ids
-    tuple val(meta2), val(blastn)
+    tuple val(meta2), path(blastn)
 
     output:
     tuple val(meta), path("*.yaml"), emit: yaml