diff --git a/topics/tutorials/writing_tests_for_plugins/tests_prerequisites.md b/topics/tutorials/writing_tests_for_plugins/tests_prerequisites.md
index a531ff7b2..c94fd49ae 100644
--- a/topics/tutorials/writing_tests_for_plugins/tests_prerequisites.md
+++ b/topics/tutorials/writing_tests_for_plugins/tests_prerequisites.md
@@ -1,7 +1,7 @@
-<!-- Copyright 2000-2023 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license. -->
-
 # 1. Tests Prerequisites
 
+<!-- Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license. -->
+
 <link-summary>Setting up the test folders structure and mocking the project's SDK.</link-summary>
 
 <snippet id="custom_language_testing_tutorial_header">
@@ -17,14 +17,24 @@ This page discusses the steps to configure a plugin project for creating tests.
 Open the plugin project and create a separate folder named <path>test</path> under the <path>src</path> directory.
 Under <path>test</path>, create the <path>java</path> folder for test source code, and the folder <path>testData</path> for [test data files](test_project_and_testdata_directories.md) and reimport the Gradle project.
 
-```text
-└── src
-    ├── main
-    │   ├── java
-    │   └── resources
-    └── test
-        ├── java
-        └── testData
+```plantuml
+@startuml
+
+skinparam TitleFontName JetBrains Sans
+skinparam TitleFontStyle plain
+skinparam TitleFontSize 16
+skinparam DefaultTextAlignment left
+
+title
+  src
+  |_ main
+    |_ java
+    |_ resources
+  |_ test
+    |_ java
+    |_ testData
+end title
+@enduml
 ```
 
 ## Set the Run Configuration Parameters