diff --git a/app/views/epp/error.xml.builder b/app/views/epp/error.xml.builder
index f906a7e04..609c323ff 100644
--- a/app/views/epp/error.xml.builder
+++ b/app/views/epp/error.xml.builder
@@ -7,7 +7,7 @@ xml.epp_head do
       xml.result('code' => x[:code]) do
         xml.msg(x[:msg], 'lang' => 'en')
         model_name = resource ? resource.model_name.singular.sub('epp_','') : controller.controller_name.singularize
-        prefix = model_name == 'poll' ? 'changePoll' : model_name + '-eis'
+        prefix = model_name == 'poll' ? 'changePoll' : model_name + '-ee'
 
         xml.value("xmlns:#{model_name}" => Xsd::Schema.filename(for_prefix: prefix)) do
           value = x[:value][:val]
diff --git a/lib/xsd/schema.rb b/lib/xsd/schema.rb
index 1f93d53ca..df82aa489 100644
--- a/lib/xsd/schema.rb
+++ b/lib/xsd/schema.rb
@@ -4,7 +4,7 @@ module Xsd
     BASE_URL = 'https://epp.tld.ee/schema/'.freeze
 
     PREFIXES = %w[
-	  domain-ee
+      domain-ee
       domain-eis
       all-ee
       changePoll