diff --git a/src/agoradatatools/great_expectations/gx/expectations/genes_biodomains.json b/src/agoradatatools/great_expectations/gx/expectations/genes_biodomains.json
index 9e024954..436a5025 100644
--- a/src/agoradatatools/great_expectations/gx/expectations/genes_biodomains.json
+++ b/src/agoradatatools/great_expectations/gx/expectations/genes_biodomains.json
@@ -94,12 +94,12 @@
               "go_terms": {
                 "default": [],
                 "items": {
-                  "UniqueItems": true,
                   "type": "string"
                 },
                 "maxItems": 100,
                 "minItems": 1,
-                "type": "array"
+                "type": "array",
+                "uniqueItems": true
               },
               "n_biodomain_terms": {
                 "default": 0,
diff --git a/src/agoradatatools/great_expectations/gx/json_schemas/genes_biodomains/gene_biodomains_schema.json b/src/agoradatatools/great_expectations/gx/json_schemas/genes_biodomains/gene_biodomains_schema.json
index 03949207..a58f1161 100644
--- a/src/agoradatatools/great_expectations/gx/json_schemas/genes_biodomains/gene_biodomains_schema.json
+++ b/src/agoradatatools/great_expectations/gx/json_schemas/genes_biodomains/gene_biodomains_schema.json
@@ -42,12 +42,12 @@
             },
             "go_terms": {
                 "type": "array",
+                "uniqueItems": true,
                 "default": [],
                 "minItems": 1,
                 "maxItems": 100,
                 "items": {
-                    "type": "string",
-                    "UniqueItems": true
+                    "type": "string"
                 }
             },
             "n_biodomain_terms": {