diff --git a/app/models/ip_pool.rb b/app/models/ip_pool.rb
index df1a301..629929b 100644
--- a/app/models/ip_pool.rb
+++ b/app/models/ip_pool.rb
@@ -24,6 +24,7 @@ class IPPool < ApplicationRecord
   has_many :servers, :dependent => :restrict_with_exception
   has_many :organization_ip_pools, :dependent => :destroy
   has_many :organizations, :through => :organization_ip_pools
+  has_many :ip_pool_rules, :dependent => :destroy
 
   def self.default
     where(:default => true).order(:id).first