diff --git a/nextflow_schema.json b/nextflow_schema.json
index 4614dd9..cacff75 100644
--- a/nextflow_schema.json
+++ b/nextflow_schema.json
@@ -523,24 +523,20 @@
                     "help_text": "At least nodes.dmp and names.dmp are required. A merged.dmp file is optional."
                 },
                 "taxpasta_add_name": {
-                    "type": "string",
-                    "default": "false",
+                    "type": "boolean",
                     "description": "Add the taxon name to the output."
                 },
                 "taxpasta_add_rank": {
-                    "type": "string",
-                    "default": "false",
+                    "type": "boolean",
                     "description": "Add the taxon rank to the output."
                 },
                 "taxpasta_add_lineage": {
-                    "type": "string",
-                    "default": "false",
+                    "type": "boolean",
                     "description": "Add the taxon's entire lineage to the output.",
                     "help_text": "These are taxon names separated by semi-colons.   "
                 },
                 "taxpasta_add_idlineage": {
-                    "type": "string",
-                    "default": "false",
+                    "type": "boolean",
                     "description": "Add the taxon's entire lineage to the output.",
                     "help_text": "These are taxon identifiers separated by semi-colons. "
                 }