diff --git a/api/sixtyfps-cpp/include/sixtyfps_brush.h b/api/sixtyfps-cpp/include/sixtyfps_brush.h
index cd5bd73f2..a00a9f14a 100644
--- a/api/sixtyfps-cpp/include/sixtyfps_brush.h
+++ b/api/sixtyfps-cpp/include/sixtyfps_brush.h
@@ -17,7 +17,7 @@ namespace sixtyfps {
 
 using cbindgen_private::types::GradientStop;
 
-struct Brush
+class Brush
 {
 public:
     Brush() : data(Inner::NoBrush()) { }