diff --git a/packages/serum/package.json b/packages/serum/package.json
index cf7d920c..25cf85b0 100644
--- a/packages/serum/package.json
+++ b/packages/serum/package.json
@@ -29,6 +29,7 @@
     "@typescript-eslint/eslint-plugin": "^4.6.0",
     "@typescript-eslint/parser": "^4.6.0",
     "babel-eslint": "^10.0.3",
+    "bs58": "^4.0.1",
     "cross-env": "^7.0.2",
     "eslint": "^7.6.0",
     "eslint-config-prettier": "^6.11.0",
@@ -46,8 +47,8 @@
     "trailingComma": "all"
   },
   "dependencies": {
-    "@solana/spl-token": "^0.1.6",
     "@project-serum/anchor": "^0.11.1",
+    "@solana/spl-token": "^0.1.6",
     "@solana/web3.js": "^1.21.0",
     "bn.js": "^5.1.2",
     "buffer-layout": "^1.2.0"
diff --git a/packages/serum/src/instructions.js b/packages/serum/src/instructions.js
index 7cae60ec..b056ae33 100644
--- a/packages/serum/src/instructions.js
+++ b/packages/serum/src/instructions.js
@@ -104,8 +104,17 @@ export function encodeInstruction(instruction) {
   return b.slice(0, INSTRUCTION_LAYOUT.encode(instruction, b));
 }
 
-export function decodeInstruction(message) {
-  return INSTRUCTION_LAYOUT.decode(message);
+/**
+ * Accepts raw instruction data as a buffer of raw bytes
+ *    eg. from  [@solana/web3.js.TransactionInstruction.data](https://solana-labs.github.io/solana-web3.js/classes/TransactionInstruction.html)
+ *     or from  decoding the base58 data from [@solana/web3.js.PartiallyDecodedInstruction.data](https://solana-labs.github.io/solana-web3.js/modules.html#PartiallyDecodedInstruction)
+ * Returns an object that describes the instruction parameters
+ * 
+ * @param {Uint8Array} instructionData 
+ * @returns {Object} decoded Instruction Object
+ */
+export function decodeInstruction(instructionData) {
+  return INSTRUCTION_LAYOUT.decode(instructionData);
 }
 
 export class DexInstructions {
diff --git a/packages/serum/src/instructions.test.js b/packages/serum/src/instructions.test.js
index db1d9400..df893d7a 100644
--- a/packages/serum/src/instructions.test.js
+++ b/packages/serum/src/instructions.test.js
@@ -1,5 +1,6 @@
-import { encodeInstruction } from './instructions';
+import { encodeInstruction, decodeInstruction } from './instructions';
 import BN from 'bn.js';
+import base58 from 'bs58';
 
 describe('instruction', () => {
   it('encodes initialize market', () => {
@@ -30,4 +31,12 @@ describe('instruction', () => {
       '0001000000010000000a000000000000000500000000000000020000000000000000000000',
     );
   });
+
+  it('decodes new order from rawbytes', () => {
+    const newOrderExpectedJSON = '{"newOrderV3":{"side":"buy","limitPrice":"011d28","maxBaseQuantity":"0122","maxQuoteQuantity":"7e2edb40","selfTradeBehavior":"decrementTake","orderType":"limit","clientId":"00","limit":65535}}'
+    const newOrderInstData58 = '189VEfQCdeLeDg3Y6qq3iVwwij5GobKfSvh42MPYfkCpGVM4TkjdwRK9FdLswwBvABt5k'
+    const newOrderInstDataBytes = base58.decode(newOrderInstData58)
+    const orderObj = decodeInstruction(newOrderInstDataBytes);
+    expect(JSON.stringify(orderObj)).toEqual(newOrderExpectedJSON);
+  });
 });