diff --git a/src/effects/gradients/Sk4fLinearGradient.cpp b/src/effects/gradients/Sk4fLinearGradient.cpp
index 4ea025d..090bdaa 100644
--- a/src/effects/gradients/Sk4fLinearGradient.cpp
+++ b/src/effects/gradients/Sk4fLinearGradient.cpp
@@ -419,9 +419,8 @@
         return false;
     }
 
-    const SkGradientShaderBase& shader = static_cast<const SkGradientShaderBase&>(fShader);
     if (mode != SkXfermode::kSrc_Mode &&
-        !(mode == SkXfermode::kSrcOver_Mode && shader.colorsAreOpaque())) {
+        !(mode == SkXfermode::kSrcOver_Mode && (fFlags & kOpaqueAlpha_Flag))) {
         return false;
     }