diff --git a/api-ref/source/v2/parameters.yaml b/api-ref/source/v2/parameters.yaml
index 2c0b6128b..a58783e62 100644
--- a/api-ref/source/v2/parameters.yaml
+++ b/api-ref/source/v2/parameters.yaml
@@ -5487,7 +5487,7 @@ subnet-obj:
     A ``subnet`` object.
   in: body
   required: true
-  type: string
+  type: object
 subnet-prefixlen-request:
   description: |
     The prefix length to use for subnet allocation from a subnet pool.