diff --git a/libvips/convolution/convasep.c b/libvips/convolution/convasep.c
index 1dcd68c9..f8c586b1 100644
--- a/libvips/convolution/convasep.c
+++ b/libvips/convolution/convasep.c
@@ -66,8 +66,6 @@
 	  we could then use orc to write a bit of code to implement this set 
 	  of lines
 
-	- need to intize masks?
-
  */
 
 /* Show sample pixels as they are transformed.