diff --git a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/ArticleApplication.java b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/ArticleApplication.java
index fd03efa695..568d31e8bc 100644
--- a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/ArticleApplication.java
+++ b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/ArticleApplication.java
@@ -14,18 +14,17 @@ import springfox.documentation.swagger2.annotations.EnableSwagger2;
 @EnableSwagger2
 public class ArticleApplication {
 
-	public static void main(String[] args) {
-		SpringApplication.run(ArticleApplication.class, args);
-		
-	}
-	
-	@Bean
-	public Docket api() {
-		return new Docket(DocumentationType.SWAGGER_2)
-				.select()
-				.apis(RequestHandlerSelectors.any())
-				.paths(PathSelectors.any())
-				.build();
-	}
+    public static void main(String[] args) {
+        SpringApplication.run(ArticleApplication.class, args);
+    }
+
+    @Bean
+    public Docket api() {
+        return new Docket(DocumentationType.SWAGGER_2)
+              .select()
+              .apis(RequestHandlerSelectors.any())
+              .paths(PathSelectors.any())
+              .build();
+    }
 
 }
diff --git a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/controller/ArticlesController.java b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/controller/ArticlesController.java
index 380f40dbd5..96812e367a 100644
--- a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/controller/ArticlesController.java
+++ b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/controller/ArticlesController.java
@@ -11,18 +11,18 @@ import com.baeldung.springboot.swagger.service.ArticleService;
 @RestController
 @RequestMapping("/articles")
 public class ArticlesController {
-	
-	@Autowired
-	private ArticleService articleService;
-	
-	@GetMapping("")
-	public List<Article> getAllArticles(){
-		return articleService.getAllArticles();
-	}
-	
-	@PostMapping("")
-	public void addArticle(@RequestBody Article article) {
-		articleService.addArticle(article);
-	}
+
+    @Autowired
+    private ArticleService articleService;
+
+    @GetMapping("")
+    public List<Article> getAllArticles() {
+        return articleService.getAllArticles();
+    }
+
+    @PostMapping("")
+    public void addArticle(@RequestBody Article article) {
+        articleService.addArticle(article);
+    }
 
 }
diff --git a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/model/Article.java b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/model/Article.java
index ba927d5b4f..6512b4e1a7 100644
--- a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/model/Article.java
+++ b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/model/Article.java
@@ -13,7 +13,7 @@ public class Article {
     //@JsonIgnore
     //@JsonProperty(access = JsonProperty.Access.READ_ONLY)
     //@ApiModelProperty(hidden = true)
-    @ApiParam(hidden = true)
+    //@ApiParam(hidden = true)
     //@ApiModelProperty(readOnly = true)
     private int id;
     private String title;
diff --git a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/service/ArticleService.java b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/service/ArticleService.java
index b41bfabb29..04f6e6c6e3 100644
--- a/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/service/ArticleService.java
+++ b/spring-boot-modules/spring-boot-mvc/src/main/java/com/baeldung/springboot/swagger/service/ArticleService.java
@@ -9,17 +9,17 @@ import com.baeldung.springboot.swagger.model.Article;
 
 @Service
 public class ArticleService {
-	
-	private List<Article> articles = new ArrayList<>();
-	
-	public List<Article> getAllArticles(){
-		return articles;
-	}
-	
-	public void addArticle(Article article) {
-		article.setId(articles.size()+1);
-		articles.add(article);
-	}
+
+    private List<Article> articles = new ArrayList<>();
+
+    public List<Article> getAllArticles() {
+        return articles;
+    }
+
+    public void addArticle(Article article) {
+        article.setId(articles.size() + 1);
+        articles.add(article);
+    }
 	
 
 }