diff --git a/roles/calibre/tasks/debs.yml b/roles/calibre/tasks/debs.yml
index 03d77ae32..02021775d 100644
--- a/roles/calibre/tasks/debs.yml
+++ b/roles/calibre/tasks/debs.yml
@@ -9,4 +9,9 @@
 
 - name: Upgrade latest Calibre
   command: scripts/calibre-install-latest.sh
-  when: not is_rpi
+  #when: not is_rpi
+
+# Oops "when: not is_rpi" causes Calibre playbook to fail on Raspbian Lite (possibly
+# other OS's too).  Error msg is: "Unable to start service calibre-serve: Job for
+# calibre-serve.service failed because the control process exited with error code."
+# Running "calibre --version" responds with "calibre (calibre 2.75.1)".