diff --git a/api/src/main/java/org/cardanofoundation/rosetta/api/block/mapper/AbstractToOperation.java b/api/src/main/java/org/cardanofoundation/rosetta/api/block/mapper/AbstractToOperation.java
index 2e5d70bac..6f423c924 100644
--- a/api/src/main/java/org/cardanofoundation/rosetta/api/block/mapper/AbstractToOperation.java
+++ b/api/src/main/java/org/cardanofoundation/rosetta/api/block/mapper/AbstractToOperation.java
@@ -6,7 +6,6 @@
 import jakarta.validation.constraints.NotNull;
 
 import org.springframework.beans.factory.annotation.Autowired;
-import org.apache.commons.codec.binary.Hex;
 import org.apache.commons.lang3.mutable.MutableInt;
 import org.modelmapper.builder.ConfigurableConditionExpression;
 import org.openapitools.client.model.Amount;
@@ -52,7 +51,7 @@ protected OperationMetadata mapToOperationMetaData(boolean spent, List<Amt> amou
             tokenBundleItem.setPolicyId(amount.getPolicyId());
             Amount amt = new Amount();
             amt.setValue(DataMapper.mapValue(amount.getQuantity().toString(), spent));
-            String hexAssetName = Hex.encodeHexString(amount.getAssetName().getBytes());
+            String hexAssetName = amount.getUnit().replace(amount.getPolicyId(), "");
             amt.setCurrency(Currency.builder()
                 .symbol(hexAssetName)
                 .decimals(0)
diff --git a/api/src/test/java/org/cardanofoundation/rosetta/api/block/mapper/BlockTxToRosettaTransactionTest.java b/api/src/test/java/org/cardanofoundation/rosetta/api/block/mapper/BlockTxToRosettaTransactionTest.java
index 55111a99f..69aec271a 100644
--- a/api/src/test/java/org/cardanofoundation/rosetta/api/block/mapper/BlockTxToRosettaTransactionTest.java
+++ b/api/src/test/java/org/cardanofoundation/rosetta/api/block/mapper/BlockTxToRosettaTransactionTest.java
@@ -7,7 +7,6 @@
 
 import org.springframework.beans.factory.annotation.Autowired;
 import com.bloxbean.cardano.yaci.core.model.certs.CertificateType;
-import org.apache.commons.codec.binary.Hex;
 import org.assertj.core.util.introspection.CaseFormatUtils;
 import org.openapitools.client.model.Amount;
 import org.openapitools.client.model.CoinAction;
@@ -285,8 +284,7 @@ void toDto_Test_getOutputsAsOperations() {
 
     Amount token = bundle.getTokens().getFirst();
     assertThat(token.getCurrency().getSymbol())
-        .isEqualTo(Hex.encodeHexString(
-            from.getOutputs().getFirst().getAmounts().getFirst().getAssetName().getBytes()));
+        .isEqualTo("unit1");
     assertThat(token.getCurrency().getDecimals()).isZero();
   }
 
@@ -333,8 +331,7 @@ void toDto_Test_getInputsAsOperations() {
 
     Amount token = bundle.getTokens().getFirst();
     assertThat(token.getCurrency().getSymbol())
-        .isEqualTo(Hex.encodeHexString(
-            from.getInputs().getFirst().getAmounts().getFirst().getAssetName().getBytes()));
+        .isEqualTo("unit1");
     assertThat(token.getCurrency().getDecimals()).isZero();
   }