diff --git a/Sources/7-Zip/7zCoder.swift b/Sources/7-Zip/7zCoder.swift
index b8f0e047..dd2e68e9 100644
--- a/Sources/7-Zip/7zCoder.swift
+++ b/Sources/7-Zip/7zCoder.swift
@@ -29,8 +29,7 @@ class SevenZipCoder {
         isComplex = flags & 0x10 != 0
         hasAttributes = flags & 0x20 != 0
 
-        let id = bitReader.bytes(count: idSize)
-        self.id = id
+        id = bitReader.bytes(count: idSize)
         compressionMethod = CompressionMethod(id)
         isEncryptionMethod = id[0] == 0x06