diff --git a/apache.cf b/apache.cf
index e2e1312..fd6c1fc 100644
--- a/apache.cf
+++ b/apache.cf
@@ -78,7 +78,7 @@ vars:
 		"phpm" string => "php";
 
 	ubuntu::
-		"modules" string => '[
+		"modules" data => '[
 			{m:"$(phpm)",f:"libphp$(install_php.version)"},
 			{m:"proxy",f:"mod_proxy"},
 			{m:"proxy_http",f:"mod_proxy_http"},