diff --git a/include/gdiplusgpstubs.h b/include/gdiplusgpstubs.h
index 39bca1f..5c02268 100644
--- a/include/gdiplusgpstubs.h
+++ b/include/gdiplusgpstubs.h
@@ -46,5 +46,6 @@
 typedef FillMode GpFillMode;
 typedef PathData GpPathData;
 typedef LineCap GpLineCap;
+typedef RectF GpRectF;
 
 #endif