diff --git a/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java b/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java
index 7e5af4c..4dab58c 100644
--- a/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java
+++ b/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java
@@ -1,11 +1,13 @@
 package com.example.demo.app.domain.service.impl;
 
 import java.util.List;
+import java.util.Optional;
 
 import org.springframework.stereotype.Service;
 
 import com.example.demo.app.domain.model.CategoryModel;
 import com.example.demo.app.domain.service.CategoryService;
+import com.example.demo.app.infra.entity.CategoryEntity;
 import com.example.demo.app.infra.repository.CategoryRepository;
 
 import lombok.RequiredArgsConstructor;
@@ -22,4 +24,16 @@ public class CategoryServiceImpl implements CategoryService{
 		
 	}
 	
+	public CategoryModel findOne(Long categoryId) {
+		
+		Optional<CategoryEntity> optionalCategoryModel = categoryRepository.findById(categoryId);
+		
+		if (optionalCategoryModel.isEmpty()) {
+			return null;
+		}
+		
+		return CategoryModel.convertFrom(optionalCategoryModel.get());
+		
+	}
+	
 }
diff --git a/src/main/java/com/example/demo/app/infra/repository/CategoryRepository.java b/src/main/java/com/example/demo/app/infra/repository/CategoryRepository.java
index 0acdc37..0f8ef9c 100644
--- a/src/main/java/com/example/demo/app/infra/repository/CategoryRepository.java
+++ b/src/main/java/com/example/demo/app/infra/repository/CategoryRepository.java
@@ -5,5 +5,5 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import com.example.demo.app.infra.entity.CategoryEntity;
 
 public interface CategoryRepository extends JpaRepository<CategoryEntity, Long> {
-
+	
 }