diff --git a/lib/plugins/aws/provider/awsProvider.js b/lib/plugins/aws/provider/awsProvider.js
index cc087d3ef4a..99b973f82b8 100644
--- a/lib/plugins/aws/provider/awsProvider.js
+++ b/lib/plugins/aws/provider/awsProvider.js
@@ -363,7 +363,8 @@ class AwsProvider {
               type: 'object',
             },
             Transform: {
-              type: 'object',
+              type: 'array',
+              items: { type: 'string' },
             },
             // Not replicating the full JSON schema from https://s3.amazonaws.com/cfn-resource-specifications-us-east-1-prod/schemas/2.15.0/all-spec.json
             // as that gets into the specifics for each resource type.