diff --git a/conf/modules.config b/conf/modules.config
index 0bab02b..605a7c5 100644
--- a/conf/modules.config
+++ b/conf/modules.config
@@ -543,12 +543,7 @@ process {
     }
 
     withName: TAXPASTA_MERGE {
-        ext.args =  {
-            [
-                "-p ${meta.tool} -o ${meta.tool}_${meta.id}.${params.standardisation_taxpasta_format}",
-                params.standardisation_taxpasta_addtaxonomy ? "-p" : ""
-            ].join(' ').trim()
-            }
+        ext.args =  { "-p ${meta.tool} -o ${meta.tool}_${meta.id}.${params.standardisation_taxpasta_format}" }
         publishDir = [
             path: { "${params.outdir}/taxpasta/" },
             mode: params.publish_dir_mode,
diff --git a/nextflow.config b/nextflow.config
index 34e8b00..9228d67 100644
--- a/nextflow.config
+++ b/nextflow.config
@@ -156,7 +156,6 @@ params {
 
     // profile standardisation
     run_profile_standardisation             = false
-    standardisation_taxpasta_addtaxonomy    = false
     standardisation_taxpasta_format         = 'tsv'
     standardisation_motus_generatebiom      = false
 }
diff --git a/nextflow_schema.json b/nextflow_schema.json
index a7a1b4d..5871862 100644
--- a/nextflow_schema.json
+++ b/nextflow_schema.json
@@ -516,11 +516,6 @@
                     "fa_icon": "fas fa-file",
                     "description": "The desired output format.",
                     "enum": ["tsv", "csv", "arrow", "parquet", "biom"]
-                },
-                "standardisation_taxpasta_addtaxonomy": {
-                    "type": "boolean",
-                    "description": "The path to a directory containing taxdump files, typically from NCBI.",
-                    "help_text": "At least nodes.dmp and names.dmp are required. A merged.dmp file is optional."
                 }
             },
             "fa_icon": "fas fa-chart-line"