diff --git a/website/docs/backends/types/s3.html.md b/website/docs/backends/types/s3.html.md
index f30acded1..4f9596d12 100644
--- a/website/docs/backends/types/s3.html.md
+++ b/website/docs/backends/types/s3.html.md
@@ -164,7 +164,7 @@ The following configuration options or environment variables are supported:
    the state.
  * `lock_table` - (Optional, Deprecated) Use `dynamodb_table` instead.
  * `dynamodb_table` - (Optional) The name of a DynamoDB table to use for state
-   locking and consistency. The table must have a primary key named LockID. If
+   locking and consistency. The table must have a primary key named LockID(`LockID` must have type of `string`). If
    not present, locking will be disabled.
  * `profile` - (Optional) This is the AWS profile name as set in the
    shared credentials file. It can also be sourced from the `AWS_PROFILE`