diff --git a/fuzz/FuzzCanvas.cpp b/fuzz/FuzzCanvas.cpp
index bcd4619615..3b3715fe8a 100644
--- a/fuzz/FuzzCanvas.cpp
+++ b/fuzz/FuzzCanvas.cpp
@@ -1803,11 +1803,7 @@ DEF_FUZZ(DebugGLCanvas, fuzz) {
 #endif
 
 DEF_FUZZ(PDFCanvas, fuzz) {
-    struct final : public SkWStream {
-        bool write(const void*, size_t n) override { fN += n; return true; }
-        size_t bytesWritten() const override { return fN; }
-        size_t fN = 0;
-    } stream;
+    SkNullWStream stream;
     auto doc = SkDocument::MakePDF(&stream);
     fuzz_canvas(fuzz, doc->beginPage(SkIntToScalar(kCanvasSize.width()),
                                      SkIntToScalar(kCanvasSize.height())));