diff --git a/src/ssn/extractFileStream.ts b/src/ssn/extractFileStream.ts
index a074647..43f9899 100644
--- a/src/ssn/extractFileStream.ts
+++ b/src/ssn/extractFileStream.ts
@@ -11,7 +11,8 @@ import streamSetMaxLength from './streams/streamSetMaxLength';
  * and must transparently span across multiple disks if necessary.
  */
 export default function extractFileStream(file: ISsnFileEntry, inputStream: stream.Readable): stream.Readable {
-  const localFileHeader = new DataView(inputStream.read(30));
+  const headerBuffer: Buffer = inputStream.read(30);
+  const localFileHeader = new DataView(headerBuffer.buffer);
 
   //Local file header signature
   if (localFileHeader.getUint32(0, true) !== 0x04034B50) {