diff --git a/features.in/syslinux/scripts.d/20-propagator-ramdisk b/features.in/syslinux/scripts.d/20-propagator-ramdisk
index 739e9bb4..525512a0 100755
--- a/features.in/syslinux/scripts.d/20-propagator-ramdisk
+++ b/features.in/syslinux/scripts.d/20-propagator-ramdisk
@@ -1,6 +1,7 @@
 #!/bin/sh
 # postprocess isolinux configuration
 # when the image sizes are finally known
+# NB: install2_size, live_size, rescue_size get defined here
 
 cd "$WORKDIR"