diff --git a/roles/0-init/tasks/validate_vars.yml b/roles/0-init/tasks/validate_vars.yml
index cfe0cdb0b..a72eb0fc9 100644
--- a/roles/0-init/tasks/validate_vars.yml
+++ b/roles/0-init/tasks/validate_vars.yml
@@ -60,7 +60,6 @@
       - mysql
       - squid
       - dansguardian
-      - postgresql
       - cups
       - samba
       - usb_lib
diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index 8034fdc0d..a1ed60de9 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -296,11 +296,8 @@ dansguardian_install: False
 dansguardian_enabled: False
 
 # 2020-02-04: postgresql_install is completely ignored as PostgreSQL is
-# installed on demand as a dependency -- by Moodle &/or Pathagar -- but for now
-# we set fake value 'postgresql_install: True' so that
-# 'postgresql_installed is defined' input validation works, e.g. in
-# 0-init/tasks/validate_vars.yml
-postgresql_install: True
+# installed on demand as a dependency -- by Moodle &/or Pathagar
+postgresql_install: False
 postgresql_enabled: False
 
 # Common UNIX Printing System (CUPS)