diff --git a/_includes/cwl/19-custom-types/custom-types.yml b/_includes/cwl/19-custom-types/custom-types.yml
index ec8fb9e6..4f873913 100644
--- a/_includes/cwl/19-custom-types/custom-types.yml
+++ b/_includes/cwl/19-custom-types/custom-types.yml
@@ -1,3 +1,5 @@
-proteinFile:
+biom:
     class: File
-    path: test_proteins.fasta
+    format: http://edamontology.org/format_3746
+    path: rich_sparse_otu_table.biom
+table_type: OTU table