diff --git a/packages/cdk/lib/rag-knowledge-base-stack.ts b/packages/cdk/lib/rag-knowledge-base-stack.ts
index 488e8c4e..e440d3e2 100644
--- a/packages/cdk/lib/rag-knowledge-base-stack.ts
+++ b/packages/cdk/lib/rag-knowledge-base-stack.ts
@@ -287,7 +287,7 @@ export class RagKnowledgeBaseStack extends Stack {
       dataSourceConfiguration: {
         s3Configuration: {
           bucketArn: `arn:aws:s3:::${dataSourceBucket.bucketName}`,
-          inclusionPrefixes: ['docs'],
+          inclusionPrefixes: ['docs/'],
         },
         type: 'S3',
       },