diff --git a/components/schemas/TronAccount.yml b/components/schemas/TronAccount.yml
index ba2b95c..0c0969f 100644
--- a/components/schemas/TronAccount.yml
+++ b/components/schemas/TronAccount.yml
@@ -35,9 +35,11 @@ properties:
         - key
         - value
   trc20:
-    type: array of objects
-    description: List of TRC20 token balances, where key is the TRC20 token address and value is balance.
-    example: [{"TWEWc9EoVMn588Kn7p1E6pdcpStTg3AhsG": "99999700000000000"},{"TNBQup8ZkD9VmChpGiynGAjh3KbeFZ8mMT": "500"}]
+    type: array
+    items:
+      type: object
+      description: List of TRC20 token balances, where key is the TRC20 token address and value is balance.
+      example: [{"TWEWc9EoVMn588Kn7p1E6pdcpStTg3AhsG": "99999700000000000"},{"TNBQup8ZkD9VmChpGiynGAjh3KbeFZ8mMT": "500"}]
   createTime:
     type: number
     description: Date of creation of the account in UTC millis.