diff --git a/rs/java/android/renderscript/ScriptIntrinsicBlend.java b/rs/java/android/renderscript/ScriptIntrinsicBlend.java
index 906e0f640a4f0..dc1bec32f52d2 100644
--- a/rs/java/android/renderscript/ScriptIntrinsicBlend.java
+++ b/rs/java/android/renderscript/ScriptIntrinsicBlend.java
@@ -402,6 +402,8 @@ public class ScriptIntrinsicBlend extends ScriptIntrinsic {
     /**
      * Sets dst = {src.r ^ dst.r, src.g ^ dst.g, src.b ^ dst.b, src.a ^ dst.a}
      *
+     * <b>Note:</b> this is NOT the Porter/Duff XOR mode; this is a bitwise xor.
+     *
      * @param ain The source buffer
      * @param aout The destination buffer
      * @param opt LaunchOptions for clipping