diff --git a/roles/1-prep/tasks/main.yml b/roles/1-prep/tasks/main.yml
index 4cdefaa66..d540badca 100644
--- a/roles/1-prep/tasks/main.yml
+++ b/roles/1-prep/tasks/main.yml
@@ -62,6 +62,7 @@
   when: grep_ubermix.rc == 0    # 1 if absent in file, 2 if file doesn't exist
   #when: ro_dir.stat.exists
 
+# 2020-03-19: for KA Lite, but moved from roles/kalite/tasks/install.yml
 # This effectively does nothing at all on Ubuntu & Raspbian, where libgeos-*
 # pkgs are not installed FWIW.  But it's included to safeguard us across all
 # OS's, in case others OS's like Ubermix later appear.  See #1382 for details.