diff --git a/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php b/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
index aa43be265..6b766c5c8 100644
--- a/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
+++ b/src/Bundle/ChillThirdPartyBundle/Entity/ThirdParty.php
@@ -32,9 +32,9 @@ use Symfony\Component\Serializer\Annotation\DiscriminatorMap;
 
 /**
  * ThirdParty is a party recorded in the database.
- * 
- * A party may be attached to multiple centers. Being attach to a center allow 
- * all users with the right 'CHILL_3PARTY_3PARTY_SEE', 'CHILL_3PARTY_3 to see, select and edit parties for this 
+ *
+ * A party may be attached to multiple centers. Being attach to a center allow
+ * all users with the right 'CHILL_3PARTY_3PARTY_SEE', 'CHILL_3PARTY_3 to see, select and edit parties for this
  * center.
  *
  * @ORM\Table(name="chill_3party.third_party")
@@ -66,7 +66,7 @@ class ThirdParty
      * @var string|null
      *
      * @ORM\Column(name="telephone", type="string", length=64, nullable=true)
-     * @Assert\Regex("/^([\+{1}])([0-9\s*]{4,20})$/", 
+     * @Assert\Regex("/^([\+{1}])([0-9\s*]{4,20})$/",
      *   message="Invalid phone number: it should begin with the international prefix starting with ""+"", hold only digits and be smaller than 20 characters. Ex: +33123456789"
      * )
      */
@@ -94,13 +94,13 @@ class ThirdParty
      * @Assert\Count(min=1)
      */
     private $type;
-    
+
     /**
      * @var boolean
      * @ORM\Column(name="active", type="boolean", options={"defaut": true})
      */
     private $active = true;
-    
+
     /**
      * @var Collection instances of Center
      * @ORM\ManyToMany(targetEntity="\Chill\MainBundle\Entity\Center")
@@ -108,14 +108,15 @@ class ThirdParty
      * @Assert\Count(min=1)
      */
     private $centers;
-    
+
     /**
      * @var Address|null
      * @ORM\ManyToOne(targetEntity="\Chill\MainBundle\Entity\Address",
      *   cascade={"persist", "remove"})
+     * @ORM\JoinColumn(nullable=true, onDelete="SET NULL")
      */
     private $address;
-    
+
     /**
      * ThirdParty constructor.
      */
@@ -249,7 +250,7 @@ class ThirdParty
     {
         return $this->type;
     }
-    
+
     /**
      * @return bool
      */
@@ -257,7 +258,7 @@ class ThirdParty
     {
         return $this->active;
     }
-    
+
     /**
      * @return Collection
      */
@@ -265,7 +266,7 @@ class ThirdParty
     {
         return $this->centers;
     }
-    
+
     /**
      * @param bool $active
      * @return $this
@@ -275,7 +276,7 @@ class ThirdParty
         $this->active = $active;
         return $this;
     }
-    
+
     /**
      * @param Center $center
      */
@@ -285,7 +286,7 @@ class ThirdParty
             $this->centers->add($center);
         }
     }
-    
+
     /**
      * @param Center $center
      */
@@ -295,7 +296,7 @@ class ThirdParty
             $this->centers->removeElement($center);
         }
     }
-    
+
     /**
      * @param Collection $centers
      * @return $this
@@ -305,16 +306,16 @@ class ThirdParty
         foreach ($centers as $center) {
             $this->addCenter($center);
         }
-        
+
         foreach ($this->centers as $center) {
             if (FALSE === $centers->contains($center)) {
                 $this->removeCenter($center);
             }
         }
-        
+
         return $this;
     }
-    
+
     /**
      * @return Address|null
      */
@@ -322,7 +323,7 @@ class ThirdParty
     {
         return $this->address;
     }
-    
+
     /**
      * @param Address $address
      * @return $this
@@ -330,10 +331,10 @@ class ThirdParty
     public function setAddress(Address $address)
     {
         $this->address = $address;
-        
+
         return $this;
     }
-    
+
     /**
      * @return string
      */
diff --git a/src/Bundle/ChillThirdPartyBundle/migrations/Version20210525211216.php b/src/Bundle/ChillThirdPartyBundle/migrations/Version20210525211216.php
new file mode 100644
index 000000000..ae270a1d1
--- /dev/null
+++ b/src/Bundle/ChillThirdPartyBundle/migrations/Version20210525211216.php
@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Chill\Migrations\ThirdParty;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+/**
+ * Specify ON DELETE behaviour to handle deletion of parents in associated tables
+ */
+final class Version20210525211216 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Specify ON DELETE behaviour to handle deletion of parents in associated tables';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT FK_D952467BF5B7AF75');
+        $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT FK_D952467BF5B7AF75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) ON DELETE SET NULL NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('ALTER TABLE chill_3party.third_party DROP CONSTRAINT fk_d952467bf5b7af75');
+        $this->addSql('ALTER TABLE chill_3party.third_party ADD CONSTRAINT fk_d952467bf5b7af75 FOREIGN KEY (address_id) REFERENCES chill_main_address (id) NOT DEFERRABLE INITIALLY IMMEDIATE');
+    }
+}