diff --git a/aeternity/config.go b/aeternity/config.go
index 19c815b6..0b3f70f0 100644
--- a/aeternity/config.go
+++ b/aeternity/config.go
@@ -23,7 +23,7 @@ type AensConfig struct {
 	ClientTTL   uint64       `json:"client_ttl" yaml:"client_ttl" mapstructure:"client_ttl"`
 	PreClaimFee utils.BigInt `json:"preclaim_fee" yaml:"preclaim_fee" mapstructure:"preclaim_fee"`
 	ClaimFee    utils.BigInt `json:"claim_fee" yaml:"claim_fee" mapstructure:"claim_fee"`
-	UpdateFee   uint64       `json:"update_fee" yaml:"update_fee" mapstructure:"update_fee"`
+	UpdateFee   utils.BigInt `json:"update_fee" yaml:"update_fee" mapstructure:"update_fee"`
 }
 
 // ContractConfig configurations for contracts
@@ -96,8 +96,9 @@ var Config = ProfileConfig{
 		Names: AensConfig{
 			NameTTL:     500, // absolute block height when the name will expire
 			ClientTTL:   500, // time in blocks until the name resolver should check again in case the name was updated
-			PreClaimFee: *utils.NewBigIntFromUint64(0),
-			ClaimFee:    *utils.NewBigIntFromUint64(0),
+			PreClaimFee: *utils.RequireBigIntFromString("100000000000000"),
+			ClaimFee:    *utils.RequireBigIntFromString("100000000000000"),
+			UpdateFee:   *utils.RequireBigIntFromString("100000000000000"),
 		},
 		Contracts: ContractConfig{ // UNUSED
 			Gas:       1e9,