diff --git a/src/api/v1/types.ts b/src/api/v1/types.ts
index 9e18a8e..9d99d2f 100644
--- a/src/api/v1/types.ts
+++ b/src/api/v1/types.ts
@@ -235,7 +235,7 @@ export class TrxVariant implements ABISerializableObject {
         if (this.extra.packed_trx) {
             switch (this.extra.compression) {
                 case 'zlib': {
-                    const inflated = pako.inflate(Buffer.from(this.extra.packed_trx, 'hex'))
+                    const inflated = pako.inflate(Bytes.from(this.extra.packed_trx, 'hex').array)
                     return Serializer.decode({data: inflated, type: Transaction})
                 }
                 case 'none': {
diff --git a/src/chain/transaction.ts b/src/chain/transaction.ts
index 9eb7001..1219377 100644
--- a/src/chain/transaction.ts
+++ b/src/chain/transaction.ts
@@ -241,8 +241,8 @@ export class PackedTransaction extends Struct {
         switch (compression) {
             case CompressionType.zlib: {
                 // compress data
-                packed_trx = pako.deflate(Buffer.from(packed_trx.array))
-                packed_context_free_data = pako.deflate(Buffer.from(packed_context_free_data.array))
+                packed_trx = pako.deflate(packed_trx.array)
+                packed_context_free_data = pako.deflate(packed_context_free_data.array)
                 break
             }
             case CompressionType.none: {
@@ -265,7 +265,7 @@ export class PackedTransaction extends Struct {
             }
             // zlib compressed
             case CompressionType.zlib: {
-                const inflated = pako.inflate(Buffer.from(this.packed_trx.array))
+                const inflated = pako.inflate(this.packed_trx.array)
                 return abiDecode({data: inflated, type: Transaction})
             }
             default: {