diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index d6b8095ec..3851f5704 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -395,6 +395,7 @@ vector_map_path: "{{ content_base }}/www/osm-vector-maps"
 # roles/sugarizer/meta/main.yml auto-invokes 2 above prereqs: mongodb & nodejs
 # Might stall MongoDB on Power Failure: github.com/xsce/xsce/issues/879
 # Sugarizer 1.0.1+ strategies to solve? github.com/iiab/iiab/pull/957
+# 2019-07-08 WARNING: both vars are IGNORED on Debian 10+ due to MongoDB: github.com/iiab/iiab/issues/1437
 sugarizer_install: False
 sugarizer_enabled: False
 sugarizer_port: 8089
@@ -444,6 +445,7 @@ transmission_password: changeme
 awstats_install: True
 awstats_enabled: True
 
+# 2019-07-08 WARNING: both vars are IGNORED on Debian 10+ due to: github.com/iiab/iiab/issues/1849
 monit_install: False
 monit_enabled: False
 watchdog: