diff --git a/vars/default_vars.yml b/vars/default_vars.yml
index 4bc5cb105..21e3d5652 100644
--- a/vars/default_vars.yml
+++ b/vars/default_vars.yml
@@ -249,6 +249,10 @@ calibre_web_path: calibre  #NEEDS WORK: https://github.com/iiab/iiab/issues/529
 dokuwiki_install: False
 dokuwiki_enabled: False
 
+# MediaWiki
+mediawiki_install: False
+mediawiki_enabled: False
+
 # Elgg
 elgg_install: True
 elgg_enabled: False
diff --git a/vars/medium.localvars b/vars/medium.localvars
index 54d10c40c..81ebe2f91 100644
--- a/vars/medium.localvars
+++ b/vars/medium.localvars
@@ -128,6 +128,9 @@ calibre_web_path: calibre  #NEEDS WORK: https://github.com/iiab/iiab/issues/529
 dokuwiki_install: False
 dokuwiki_enabled: False
 
+mediawiki_install: False
+mediawiki_enabled: False
+
 elgg_install: True
 elgg_enabled: True