diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index d9f82c72e..1c87d0a67 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -413,6 +413,7 @@ calibre_via_python: False
 calibre_port: 8080
 # Change calibre to XYZ add your own mnemonic URL like: http://box/XYZ
 calibre_web_path: calibre  #NEEDS WORK: https://github.com/iiab/iiab/issues/529
+# Avoid collisions with calibreweb_url: below!
 
 # WARNING: Calibre-Web (below) depends on Calibre's own /usr/bin/ebook-convert
 # program, so we recommend you also install Calibre (above!)