diff --git a/runtime/bin/file_win.cc b/runtime/bin/file_win.cc
index 0b63b3d2acf..4c3c853d5c5 100644
--- a/runtime/bin/file_win.cc
+++ b/runtime/bin/file_win.cc
@@ -86,7 +86,7 @@ bool File::SetPosition(off64_t position) {
 
 bool File::Truncate(off64_t length) {
   ASSERT(handle_->fd() >= 0);
-  return (_chsize_s(handle_->fd(), length) != -1);
+  return _chsize_s(handle_->fd(), length) == 0;
 }