diff --git a/gm/matrixconvolution.cpp b/gm/matrixconvolution.cpp
index b986cc1..47a3581 100644
--- a/gm/matrixconvolution.cpp
+++ b/gm/matrixconvolution.cpp
@@ -25,7 +25,8 @@
 
     void make_bitmap() {
         fBitmap.allocN32Pixels(80, 80);
-        SkCanvas canvas(fBitmap);
+        SkBitmapDevice device(fBitmap);
+        SkCanvas canvas(&device);
         canvas.clear(0x00000000);
         SkPaint paint;
         paint.setAntiAlias(true);