diff --git a/src/ssn/decryption/decryptChunk.ts b/src/ssn/decryption/decryptChunk.ts
index 5079f64..c6f1c17 100644
--- a/src/ssn/decryption/decryptChunk.ts
+++ b/src/ssn/decryption/decryptChunk.ts
@@ -10,10 +10,7 @@ export default function decryptChunk(encryptedChunk: Buffer, [key0, key1, key2]:
     const keyPart = (key2 | 2) & 0xFFFF;
     const decryptedByte = (keyPart * (keyPart ^ 1)) >>> 8;
     curChar ^= decryptedByte & 0xFF;
-    //Skip the first 12 bytes (random encryption header)
-    if (i >= 12) {
-      dvOut.setUint8(i - 12, curChar);
-    }
+    dvOut.setUint8(i, curChar);
 
     //update keys
     [key0, key1, key2] = updateKeys([key0, key1, key2], curChar);