diff --git a/libs/common/src/modules/space-model/entities/space-model.entity.ts b/libs/common/src/modules/space-model/entities/space-model.entity.ts
index 8df7e45..517f273 100644
--- a/libs/common/src/modules/space-model/entities/space-model.entity.ts
+++ b/libs/common/src/modules/space-model/entities/space-model.entity.ts
@@ -23,6 +23,7 @@ export class SpaceModelEntity extends AbstractEntity<SpaceModelDto> {
     (subspaceModel) => subspaceModel.spaceModel,
     {
       cascade: true,
+      nullable: true,
     },
   )
   public subspaceModels: SubspaceModelEntity[];
@@ -32,6 +33,7 @@ export class SpaceModelEntity extends AbstractEntity<SpaceModelDto> {
     (productModel) => productModel.spaceModel,
     {
       cascade: true,
+      nullable: true,
     },
   )
   public spaceProductModels: SpaceProductModelEntity[];