diff --git a/src/ssn/decryption/decryptChunk.ts b/src/ssn/decryption/decryptChunk.ts
index afd5261..3761fde 100644
--- a/src/ssn/decryption/decryptChunk.ts
+++ b/src/ssn/decryption/decryptChunk.ts
@@ -3,12 +3,10 @@ import updateKeys from './lib/updateKeys';
 export default function getDecryptor(decryptionKeys: [number, number, number]) {
   let [key0, key1, key2] = decryptionKeys;
 
-  return (encryptedChunk: Buffer) => {
-    //const decryptedChunk = Buffer.alloc(encryptedChunk.length);
-
-    for (let i = 0; i < encryptedChunk.length; i += 1) {
+  return (chunk: Buffer) => {
+    for (let i = 0; i < chunk.length; i += 1) {
       //read byte
-      let curChar = encryptedChunk.readUInt8(i);
+      let curChar = chunk.readUInt8(i);
 
       //decrypt byte
       const keyPart = (key2 | 2) & 0xFFFF;
@@ -19,11 +17,9 @@ export default function getDecryptor(decryptionKeys: [number, number, number]) {
       [key0, key1, key2] = updateKeys([key0, key1, key2], curChar);
 
       //write byte
-      //decryptedChunk.writeUInt8(curChar, i);
-      encryptedChunk.writeUInt8(curChar, i);
+      chunk.writeUInt8(curChar, i);
     }
 
-    //return decryptedChunk;
-    return encryptedChunk;
+    return chunk;
   };
 }