diff --git a/libvips/conversion/premultiply.c b/libvips/conversion/premultiply.c
index a0d1e6c6..4d842de3 100644
--- a/libvips/conversion/premultiply.c
+++ b/libvips/conversion/premultiply.c
@@ -3,6 +3,8 @@
  * Author: John Cupitt
  * Written on: 7/5/15
  *
+ * 11/4/16 Lovell
+ * 	- fix RGBA path
  */
 
 /*