diff --git a/schemas/2.0.0.json b/schemas/2.0.0.json
index 9ee14f53..7f26c1b6 100644
--- a/schemas/2.0.0.json
+++ b/schemas/2.0.0.json
@@ -399,14 +399,14 @@
             },
             "oneOf": {
               "type": "array",
-              "minItems": 2,
+              "minItems": 1,
               "items": {
                 "$ref": "#/definitions/schema"
               }
             },
             "anyOf": {
               "type": "array",
-              "minItems": 2,
+              "minItems": 1,
               "items": {
                 "$ref": "#/definitions/schema"
               }
@@ -1370,4 +1370,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}