diff --git a/lib/dynamodb/document_client.d.ts b/lib/dynamodb/document_client.d.ts
index ebfc7e7099..54a2413add 100644
--- a/lib/dynamodb/document_client.d.ts
+++ b/lib/dynamodb/document_client.d.ts
@@ -61,7 +61,7 @@ export class DocumentClient {
     transactGet(params: DocumentClient.TransactGetItemsInput, callback?: (err: AWSError, data: DocumentClient.TransactGetItemsOutput) => void): Request<DocumentClient.TransactGetItemsOutput, AWSError>;
 
     /**
-     * Synchronous write operation that groups up to 25 action requests.
+     * Synchronous write operation that groups up to 100 action requests.
      */
     transactWrite(params: DocumentClient.TransactWriteItemsInput, callback?: (err: AWSError, data: DocumentClient.TransactWriteItemsOutput) => void): Request<DocumentClient.TransactWriteItemsOutput, AWSError>;
 }
diff --git a/lib/dynamodb/document_client.js b/lib/dynamodb/document_client.js
index 882afd3296..78f4207b91 100644
--- a/lib/dynamodb/document_client.js
+++ b/lib/dynamodb/document_client.js
@@ -397,7 +397,7 @@ AWS.DynamoDB.DocumentClient = AWS.util.inherit({
   },
 
   /**
-   * Synchronous write operation that groups up to 25 action requests.
+   * Synchronous write operation that groups up to 100 action requests.
    *
    * Supply the same parameters as {AWS.DynamoDB.transactWriteItems} with
    * `AttributeValue`s substituted by native JavaScript types.