diff --git a/luna/include/luna/TarStream.h b/luna/include/luna/TarStream.h
index b4f62402..fede39dd 100644
--- a/luna/include/luna/TarStream.h
+++ b/luna/include/luna/TarStream.h
@@ -32,7 +32,7 @@ class TarStream
 
     void rewind();
 
-    usize read_contents(const Entry& entry, char* buf, usize offset, usize length);
+    usize read_contents(const Entry& entry, void* buf, usize offset, usize length);
 
     Result<OwnedStringView> read_contents_as_string(const Entry& entry, usize offset, usize max);
 
diff --git a/luna/src/TarStream.cpp b/luna/src/TarStream.cpp
index e5d84a4b..7383ef07 100644
--- a/luna/src/TarStream.cpp
+++ b/luna/src/TarStream.cpp
@@ -87,7 +87,7 @@ Result<TarStream::Entry> TarStream::read_next_entry()
     return parse_header(&header);
 }
 
-usize TarStream::read_contents(const Entry& entry, char* buf, usize offset, usize length)
+usize TarStream::read_contents(const Entry& entry, void* buf, usize offset, usize length)
 {
     if (offset >= entry.size) return 0;
     if ((length + offset) > entry.size) length = entry.size - offset;