diff --git a/backend/src/entities/table-categories/table-categories.entity.ts b/backend/src/entities/table-categories/table-categories.entity.ts
index 22f4ef083..66eefbfc5 100644
--- a/backend/src/entities/table-categories/table-categories.entity.ts
+++ b/backend/src/entities/table-categories/table-categories.entity.ts
@@ -9,7 +9,7 @@ export class TableCategoriesEntity {
   @Column({ type: 'varchar', length: 255 })
   category_name: string;
 
-  @Column({ type: 'varchar', length: 255, nullable: false })
+  @Column({ type: 'varchar', length: 255, nullable: true, default: null })
   category_id: string;
 
   @Column({ type: 'varchar', length: 255, default: null, nullable: true })
diff --git a/backend/src/migrations/1761142678373-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts b/backend/src/migrations/1761305606579-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts
similarity index 84%
rename from backend/src/migrations/1761142678373-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts
rename to backend/src/migrations/1761305606579-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts
index 3dd6e2a73..d84ca94fa 100644
--- a/backend/src/migrations/1761142678373-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts
+++ b/backend/src/migrations/1761305606579-AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity.ts
@@ -1,10 +1,10 @@
 import { MigrationInterface, QueryRunner } from 'typeorm';
 
-export class AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity1761142678373 implements MigrationInterface {
-  name = 'AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity1761142678373';
+export class AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity1761305606579 implements MigrationInterface {
+  name = 'AddCategoryColorPropertyAndCategoryIdToTableCategoriesEntity1761305606579';
 
   public async up(queryRunner: QueryRunner): Promise<void> {
-    await queryRunner.query(`ALTER TABLE "table_categories" ADD "category_id" character varying(255) NOT NULL`);
+    await queryRunner.query(`ALTER TABLE "table_categories" ADD "category_id" character varying(255)`);
     await queryRunner.query(`ALTER TABLE "table_categories" ADD "category_color" character varying(255)`);
   }