diff --git a/app/models/domain.rb b/app/models/domain.rb
index 05ffafc4d..a9defdf50 100644
--- a/app/models/domain.rb
+++ b/app/models/domain.rb
@@ -544,7 +544,7 @@ class Domain < ActiveRecord::Base
 
   def validate_nameserver_ips
     nameservers.to_a.reject(&:marked_for_destruction?).each do |ns|
-      next unless ns.hostname.end_with?(name)
+      next unless ns.hostname.end_with?(".#{name}")
       next if ns.ipv4.present?
       errors.add(:nameservers, :invalid) if errors[:nameservers].blank?
       ns.errors.add(:ipv4, :blank)