diff --git a/src/shaders/SkImageShader.cpp b/src/shaders/SkImageShader.cpp
index 98415e927b..683ac8204a 100755
--- a/src/shaders/SkImageShader.cpp
+++ b/src/shaders/SkImageShader.cpp
@@ -499,7 +499,7 @@ bool SkImageShader::doStages(const SkStageRec& rec, SkImageStageUpdater* updater
         bool src_is_normalized = SkColorTypeIsNormalized(info.colorType());
 
         // Bicubic filtering naturally produces out of range values on both sides of [0,1].
-        if (quality > kLow_SkFilterQuality) {
+        if (quality == kHigh_SkFilterQuality) {
             p->append(SkRasterPipeline::clamp_0);
             p->append(fClampAsIfUnpremul ? SkRasterPipeline::clamp_1
                                          : SkRasterPipeline::clamp_a);
@@ -597,6 +597,7 @@ bool SkImageShader::doStages(const SkStageRec& rec, SkImageStageUpdater* updater
         p->append(SkRasterPipeline::move_dst_src);
 
     } else {
+        SkASSERT(quality == kHigh_SkFilterQuality);
         p->append(SkRasterPipeline::save_xy, sampler);
 
         sample(SkRasterPipeline::bicubic_n3x, SkRasterPipeline::bicubic_n3y);