diff --git a/samplecode/SampleText.cpp b/samplecode/SampleText.cpp
index 6483218..26c122d 100644
--- a/samplecode/SampleText.cpp
+++ b/samplecode/SampleText.cpp
@@ -120,7 +120,7 @@
     SkPowerMode(SkScalar exponent) { this->init(exponent); }
 
     virtual void xfer16(uint16_t dst[], const SkPMColor src[], int count,
-                        const SkAlpha aa[]);
+                        const SkAlpha aa[]) const SK_OVERRIDE;
 
     typedef SkFlattenable* (*Factory)(SkFlattenableReadBuffer&);
 
@@ -160,7 +160,7 @@
 }
 
 void SkPowerMode::xfer16(uint16_t dst[], const SkPMColor src[], int count,
-                         const SkAlpha aa[]) {
+                         const SkAlpha aa[]) const {
     for (int i = 0; i < count; i++) {
         SkPMColor c = src[i];
         int r = SkGetPackedR32(c);