diff --git a/app/views/epp/contacts/check.xml.builder b/app/views/epp/contacts/check.xml.builder
index 670736022..dab344196 100644
--- a/app/views/epp/contacts/check.xml.builder
+++ b/app/views/epp/contacts/check.xml.builder
@@ -5,8 +5,7 @@ xml.epp_head do
     end
 
     xml.resData do
-      xml.tag!('contact:chkData', 'xmlns:contact' => 'http://www.nic.cz/xml/epp/contact-1.6', 
-               'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/contact-1.6 contact-1.6.xsd') do
+      xml.tag!('contact:chkData', 'xmlns:contact' => 'urn:ietf:params:xml:ns:contact-1.0') do
          #xml.tag!('contact:id', @contact.code)
         @contacts.each do |contact|
           xml.tag!('contact:cd') do
diff --git a/app/views/epp/contacts/create.xml.builder b/app/views/epp/contacts/create.xml.builder
index 5377f0fa9..85f5f50c1 100644
--- a/app/views/epp/contacts/create.xml.builder
+++ b/app/views/epp/contacts/create.xml.builder
@@ -5,7 +5,7 @@ xml.epp_head do
     end
 
     xml.resData do
-      xml.tag!('contact:creData', 'xmlns:contact' => 'http://www.nic.cz/xml/epp/contact-1.6', 'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/contact-1.6 contact-1.6.xsd') do
+      xml.tag!('contact:creData', 'xmlns:contact' => 'urn:ietf:params:xml:ns:contact-1.0') do
          xml.tag!('contact:id', @contact.code)
          xml.tag!('contact:crDate', @contact.created_at)
       end
diff --git a/app/views/epp/contacts/info.xml.builder b/app/views/epp/contacts/info.xml.builder
index 244690447..212879473 100644
--- a/app/views/epp/contacts/info.xml.builder
+++ b/app/views/epp/contacts/info.xml.builder
@@ -5,8 +5,7 @@ xml.epp_head do
     end
 
     xml.resData do
-      xml.tag!('contact:chkData', 'xmlns:contact' => 'http://www.nic.cz/xml/epp/contact-1.6', 
-               'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/contact-1.6 contact-1.6.xsd') do
+      xml.tag!('contact:chkData', 'xmlns:contact' => 'urn:ietf:params:xml:ns:contact-1.0') do
         xml.tag!('contact:name', @contact.name)
         xml.tag!('contact:org', @contact.org_name)
         xml.tag!('contact:addr') do
@@ -24,7 +23,7 @@ xml.epp_head do
         xml.tag!('contact:trDate', '123') if false
         xml.tag!('contact:authInfo', '123') if false
         xml.tag!('contact:disclose', '123') if false
-        
+
       end
     end
 
diff --git a/app/views/epp/contacts/update.xml.builder b/app/views/epp/contacts/update.xml.builder
index 5377f0fa9..85f5f50c1 100644
--- a/app/views/epp/contacts/update.xml.builder
+++ b/app/views/epp/contacts/update.xml.builder
@@ -5,7 +5,7 @@ xml.epp_head do
     end
 
     xml.resData do
-      xml.tag!('contact:creData', 'xmlns:contact' => 'http://www.nic.cz/xml/epp/contact-1.6', 'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/contact-1.6 contact-1.6.xsd') do
+      xml.tag!('contact:creData', 'xmlns:contact' => 'urn:ietf:params:xml:ns:contact-1.0') do
          xml.tag!('contact:id', @contact.code)
          xml.tag!('contact:crDate', @contact.created_at)
       end
diff --git a/app/views/epp/domains/check.xml.builder b/app/views/epp/domains/check.xml.builder
index 81035c639..2a6398b15 100644
--- a/app/views/epp/domains/check.xml.builder
+++ b/app/views/epp/domains/check.xml.builder
@@ -5,7 +5,7 @@ xml.epp_head do
     end
 
     xml.resData do
-      xml.tag!('domain:chkData', 'xmlns:domain' => 'http://www.nic.cz/xml/epp/domain-1.4', 'xsi:schemaLocation' => 'http://www.nic.cz/xml/epp/domain-1.4 domain-1.4.xsd') do
+      xml.tag!('domain:chkData', 'xmlns:domain' => 'urn:ietf:params:xml:ns:domain-1.0') do
         @domains.each do |x|
           xml.tag!('domain:cd') do
             xml.tag!('domain:name', x[:name], 'avail' => x[:avail])