diff --git a/samplecode/SampleLines.cpp b/samplecode/SampleLines.cpp
index a9d070f..df35e86 100644
--- a/samplecode/SampleLines.cpp
+++ b/samplecode/SampleLines.cpp
@@ -98,7 +98,7 @@
         canvas->drawLine(x, y, x + SkIntToScalar(90), y + SkIntToScalar(90), paint);
     }
 
-    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y) {
+    virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
         fAlpha = SkScalarRound(y);
         this->inval(NULL);
         return NULL;