diff --git a/backend/src/entities/parents.entity.ts b/backend/src/entities/parents.entity.ts
index 7b33389..ea1db0e 100644
--- a/backend/src/entities/parents.entity.ts
+++ b/backend/src/entities/parents.entity.ts
@@ -28,14 +28,14 @@ export class Parents {
 
   /**
    * Placement AM↔enfant sélectionné sur le TdB parent (couple actif) — ticket #168.
-   * Null = le front prend le premier couple actif retourné par l’API.
+   * Null / absent = le front prend le premier couple actif retourné par l’API.
    */
   @Column({ name: 'id_placement_garde_courant', type: 'uuid', nullable: true })
-  id_placement_garde_courant?: string | null;
+  id_placement_garde_courant?: string;
 
   @ManyToOne(() => AmChildren, { nullable: true, onDelete: 'SET NULL' })
   @JoinColumn({ name: 'id_placement_garde_courant', referencedColumnName: 'id' })
-  placement_garde_courant?: AmChildren | null;
+  placement_garde_courant?: AmChildren;
 
   // Lien vers enfants via la table enfants_parents
   @OneToMany(() => ParentsChildren, pc => pc.parent)
diff --git a/backend/src/routes/parents/parents.service.ts b/backend/src/routes/parents/parents.service.ts
index 912e998..c1205b0 100644
--- a/backend/src/routes/parents/parents.service.ts
+++ b/backend/src/routes/parents/parents.service.ts
@@ -543,7 +543,7 @@ export class ParentsService {
       idCourant = null;
       await this.parentsRepository.update(
         { user_id: parentUserId },
-        { id_placement_garde_courant: null },
+        { id_placement_garde_courant: () => 'NULL' },
       );
     }
     if (!idCourant && placements.length === 1) {