diff --git a/app/Models/Category.ts b/app/Models/Category.ts
index 2f7a4fb..9bd6696 100644
--- a/app/Models/Category.ts
+++ b/app/Models/Category.ts
@@ -14,7 +14,7 @@ export default class Category extends BaseModel {
   public title: string;
 
   @column()
-  public description: string;
+  public description: string | null;
 
   @column({ serializeAs: null })
   public color_id: number | null;
diff --git a/app/Repositories/CategoryRepository.ts b/app/Repositories/CategoryRepository.ts
index 2361e76..3a16555 100644
--- a/app/Repositories/CategoryRepository.ts
+++ b/app/Repositories/CategoryRepository.ts
@@ -70,6 +70,7 @@ export default class CategoryRepository {
   }
 
   /**
+   * Update category by id
    *
    * @param id Category id
    * @param data
@@ -79,13 +80,7 @@ export default class CategoryRepository {
     const category = await this.Category.query().where('id', id).first();
 
     if (category) {
-      await category
-        .merge({
-          title: data.title,
-          description: data.description,
-        })
-        .save();
-
+      await category.merge(data).save();
       return category;
     }
 
diff --git a/app/Services/CategoryService.ts b/app/Services/CategoryService.ts
index bb72edd..cfe78b0 100644
--- a/app/Services/CategoryService.ts
+++ b/app/Services/CategoryService.ts
@@ -144,7 +144,7 @@ export default class CategoryService {
       success: true,
       status: HttpStatusEnum.OK,
       message: 'Category updated.',
-      data,
+      data: category,
     };
   }
 }
diff --git a/app/Validators/Category/UpdateCategoryValidator.ts b/app/Validators/Category/UpdateCategoryValidator.ts
index fbfb94b..6dff15e 100644
--- a/app/Validators/Category/UpdateCategoryValidator.ts
+++ b/app/Validators/Category/UpdateCategoryValidator.ts
@@ -6,7 +6,7 @@ export default class UpdateCategoryValidator {
 
   public schema = schema.create({
     title: schema.string.optional(),
-    description: schema.string.optional(),
+    description: schema.string.nullableAndOptional(),
   });
 
   public messages = {};