diff --git a/packages/aws-cdk-lib/aws-opensearchservice/README.md b/packages/aws-cdk-lib/aws-opensearchservice/README.md
index e24f2df325e25..dcff581a78857 100644
--- a/packages/aws-cdk-lib/aws-opensearchservice/README.md
+++ b/packages/aws-cdk-lib/aws-opensearchservice/README.md
@@ -464,7 +464,7 @@ const domain = new Domain(this, 'Domain', {
 });
 ```
 
-## Enable support for Multi-AZ with Standby deployment
+## Enable support for Multi-AZ with Standby deployment
 
 The domain can be configured to use [multi-AZ with standby](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html#managedomains-za-standby).