diff --git a/versioned_docs/version-3.12/helm-charts/how-to-deploy-scalardl-ledger.mdx b/versioned_docs/version-3.12/helm-charts/how-to-deploy-scalardl-ledger.mdx
index 2d2c926c..b0a29679 100644
--- a/versioned_docs/version-3.12/helm-charts/how-to-deploy-scalardl-ledger.mdx
+++ b/versioned_docs/version-3.12/helm-charts/how-to-deploy-scalardl-ledger.mdx
@@ -12,7 +12,7 @@ This document explains how to deploy ScalarDL Ledger using Scalar Helm Charts. Y
 
 ## Prepare a private key file (optional / it is necessary if you use ScalarDL Auditor)
 
-If you use the [asset proofs](https://scalardl.scalar-labs.com/docs/latest/how-to-use-proof) of ScalarDL Ledger, you must create a Secrete resource to mount the private key file on the ScalarDL Ledger pods. If you use ScalarDL Auditor, asset proof is necessary.
+If you use the [asset proofs](https://scalardl.scalar-labs.com/docs/latest/how-to-write-applications#what-is-asset-proof) of ScalarDL Ledger, you must create a Secrete resource to mount the private key file on the ScalarDL Ledger pods. If you use ScalarDL Auditor, asset proof is necessary.
 
 Please refer to the following document for more details on how to mount the key/certificate files on the ScalarDL pods.