diff --git a/include/gdiplusflat.h b/include/gdiplusflat.h
index 76c129c..ef65b05 100644
--- a/include/gdiplusflat.h
+++ b/include/gdiplusflat.h
@@ -34,6 +34,7 @@
 GpStatus WINGDIPAPI GdipGetPenBrushFill(GpPen*,GpBrush**);
 GpStatus WINGDIPAPI GdipGetPenColor(GpPen*,ARGB*);
 GpStatus WINGDIPAPI GdipGetPenDashArray(GpPen*,REAL*,INT);
+GpStatus WINGDIPAPI GdipGetPenDashCount(GpPen*,INT*);
 GpStatus WINGDIPAPI GdipGetPenDashOffset(GpPen*,REAL*);
 GpStatus WINGDIPAPI GdipGetPenDashStyle(GpPen*,GpDashStyle*);
 GpStatus WINGDIPAPI GdipSetPenBrushFill(GpPen*,GpBrush*);