diff --git a/AK/CountingStream.cpp b/AK/CountingStream.cpp
index c6074b25aa3..a7d9bc4a14e 100644
--- a/AK/CountingStream.cpp
+++ b/AK/CountingStream.cpp
@@ -8,8 +8,9 @@
 
 namespace AK {
 
-CountingStream::CountingStream(MaybeOwned<Stream> stream)
+CountingStream::CountingStream(MaybeOwned<Stream> stream, size_t offset)
     : m_stream(move(stream))
+    , m_read_bytes(offset)
 {
 }
 
diff --git a/AK/CountingStream.h b/AK/CountingStream.h
index 3afd1f4b48e..87cf4bec985 100644
--- a/AK/CountingStream.h
+++ b/AK/CountingStream.h
@@ -13,7 +13,7 @@ namespace AK {
 
 class CountingStream : public Stream {
 public:
-    CountingStream(MaybeOwned<Stream>);
+    CountingStream(MaybeOwned<Stream>, size_t offset = 0);
 
     u64 read_bytes() const;