diff --git a/bc/os/File.cpp b/bc/os/File.cpp
index b270be9..41d83e7 100644
--- a/bc/os/File.cpp
+++ b/bc/os/File.cpp
@@ -113,7 +113,7 @@ int32_t OsReadFile(HOSFILE fileHandle, void* buffer, size_t bytesToRead, size_t*
     return Blizzard::File::Read(fileHandle, buffer, bytesToRead, bytesRead);
 }
 
-int32_t OsWriteFile(HOSFILE fileHandle, void* buffer, size_t bytesToWrite, size_t bytesWritten) {
+int32_t OsWriteFile(HOSFILE fileHandle, void* buffer, size_t bytesToWrite, size_t* bytesWritten) {
     if (buffer != nullptr && bytesToWrite != 0) {
         return Blizzard::File::Write(fileHandle, buffer, bytesToWrite, bytesWritten);
     }