diff --git a/docs/code/interfaces/types_indexer.TransactionResult.md b/docs/code/interfaces/types_indexer.TransactionResult.md
index 8b678dac..13d34d62 100644
--- a/docs/code/interfaces/types_indexer.TransactionResult.md
+++ b/docs/code/interfaces/types_indexer.TransactionResult.md
@@ -66,7 +66,7 @@ ___
 
 ### asset-config-transaction
 
-• **asset-config-transaction**: [`AssetConfigTransactionResult`](types_indexer.AssetConfigTransactionResult.md)
+• `Optional` **asset-config-transaction**: [`AssetConfigTransactionResult`](types_indexer.AssetConfigTransactionResult.md)
 
 If the transaction is an `acfg` transaction this will be populated see `tx-type`
 
diff --git a/src/types/indexer.ts b/src/types/indexer.ts
index 8eee57dd..a8ed9329 100644
--- a/src/types/indexer.ts
+++ b/src/types/indexer.ts
@@ -120,7 +120,7 @@ export interface TransactionResult extends Record<string, any> {
    */
   'created-application-index'?: number
   /** If the transaction is an `acfg` transaction this will be populated see `tx-type` */
-  'asset-config-transaction': AssetConfigTransactionResult
+  'asset-config-transaction'?: AssetConfigTransactionResult
   /** If the transaction is an `acfg` transaction that resulted in an asset creation then this
    * specifies the asset index (ID) of that asset.
    */