diff --git a/roles/calibre/tasks/debs.yml b/roles/calibre/tasks/debs.yml
index d32674072..2d9b3a0e5 100644
--- a/roles/calibre/tasks/debs.yml
+++ b/roles/calibre/tasks/debs.yml
@@ -34,7 +34,7 @@
 #  when: is_rpi and internet_available
 
 - name: Upgrade to pinned Calibre {{ calibre_deb_version }} while using additional .deb's from testing (rpi)
-  command: scripts/calibre-install-pinned-rpi.sh    # REQUIRED for Calibre 3.30 on 2018-08-30
+  command: scripts/calibre-install-pinned-rpi.sh    # RECOMMENDED for Calibre 3.30 on 2018-08-30, so IIAB microSD will be bootable in RPi Zero W
   when: is_rpi and internet_available
 
 - name: Upgrade to Calibre testing .deb's - target Ubuntu 16.04 (not rpi and not ubuntu_18)