diff --git a/tests/QuickRejectTest.cpp b/tests/QuickRejectTest.cpp
index c17aae9..7eb80f1 100644
--- a/tests/QuickRejectTest.cpp
+++ b/tests/QuickRejectTest.cpp
@@ -98,7 +98,7 @@
 
     // Test that saveLayer updates quickReject
     SkRect bounds = SkRect::MakeLTRB(50, 50, 70, 70);
-    canvas.saveLayer(&bounds, NULL);
+    canvas.saveLayer(&bounds, nullptr);
     REPORTER_ASSERT(reporter, true == canvas.quickReject(SkRect::MakeWH(10, 10)));
     REPORTER_ASSERT(reporter, false == canvas.quickReject(SkRect::MakeWH(60, 60)));
 }