diff --git a/src/keeper/contracts/templates/EscrowAccessSecretStoreTemplate.ts b/src/keeper/contracts/templates/EscrowAccessSecretStoreTemplate.ts
index b93e885..072f269 100644
--- a/src/keeper/contracts/templates/EscrowAccessSecretStoreTemplate.ts
+++ b/src/keeper/contracts/templates/EscrowAccessSecretStoreTemplate.ts
@@ -25,7 +25,7 @@ export class EscrowAccessSecretStoreTemplate extends AgreementTemplateBase {
         const lockRewardConditionId = await lockRewardCondition.generateIdHash(
             agreementId,
             await escrowReward.getAddress(),
-            amount
+            String(amount)
         )
         const accessSecretStoreConditionId = await accessSecretStoreCondition.generateIdHash(
             agreementId,