diff --git a/packages/aws-cdk-lib/aws-efs/README.md b/packages/aws-cdk-lib/aws-efs/README.md
index e0fac19e1516b..515cce56e8744 100644
--- a/packages/aws-cdk-lib/aws-efs/README.md
+++ b/packages/aws-cdk-lib/aws-efs/README.md
@@ -91,7 +91,7 @@ new efs.FileSystem(this, 'ReplicationSourceFileSystem1', {
     enable: true,
     kmsKey, // optional
     region: 'us-east-1', // optional
-    az: 'us-east-1a', // optional, Specifing the AZ means creating a One Zone file system as the replication destination
+    availabilityZone: 'us-east-1a', // optional, Specifing the AZ means creating a One Zone file system as the replication destination
   }
 });
 
@@ -112,8 +112,6 @@ new efs.FileSystem(this, 'ReplicationSourceFileSystem2', {
 });
 ```
 
-
-
 ### IAM to control file system data access
 
 You can use both IAM identity policies and resource policies to control client access to Amazon EFS resources in a way that is scalable and optimized for cloud environments. Using IAM, you can permit clients to perform specific actions on a file system, including read-only, write, and root access.