diff --git a/samplecode/SampleHairCurves.cpp b/samplecode/SampleHairCurves.cpp
index d121cf0..183fc10 100644
--- a/samplecode/SampleHairCurves.cpp
+++ b/samplecode/SampleHairCurves.cpp
@@ -31,7 +31,7 @@
         SkPaint paint;
         paint.setAntiAlias(true);
         paint.setStyle(SkPaint::kStroke_Style);
-        paint.setStrokeWidth(-1);
+        paint.setStrokeWidth(0);
         canvas->save();
         canvas->scale(1000 * SK_Scalar1, 1000 * SK_Scalar1);
         SkRandom rand;