diff --git a/AudioMultiply_F32.h b/AudioMultiply_F32.h
index ebdf82b..33c79c2 100644
--- a/AudioMultiply_F32.h
+++ b/AudioMultiply_F32.h
@@ -1,5 +1,5 @@
 /*
- * AudioMultiply
+ * AudioMultiply_F32
  *
  * Created: Patrick Radius, December 2016
  * Purpose: Multiply two channels of audio data. Can be used for example as 'vca' or amplitude modulation.
@@ -7,6 +7,10 @@
  *
  * This processes a single stream fo audio data (ie, it is mono)
  *
+ * NOTE: *** This is functionally the same clss as AudioMathMultiply_F32  ***
+ * Both classes are continued for back compatibility.  Use ofAudioMathMultiply_F32
+ * is preferred.  We need to pick one.
+ *
  * MIT License.  use at your own risk.
 */
 #ifndef AUDIOMULTIPLYF32_H