diff --git a/docs/advanced/pool.md b/docs/advanced/pool.md
index 2d5309be44ce..d2ab9f145924 100644
--- a/docs/advanced/pool.md
+++ b/docs/advanced/pool.md
@@ -1,7 +1,7 @@
 # Custom Pool
 
 ::: warning
-This is advanced API. If you are just running tests, you probably don't need this. It is primarily used by library authors.
+This is advanced API. If you just want to [run tests](/guide/), you probably don't need this. It is primarily used by library authors.
 :::
 
 Vitest runs tests in pools. By default, there are several pools:
diff --git a/docs/advanced/runner.md b/docs/advanced/runner.md
index d4bf8fecc3ff..6007fde87de3 100644
--- a/docs/advanced/runner.md
+++ b/docs/advanced/runner.md
@@ -1,7 +1,7 @@
 # Test Runner
 
 ::: warning
-This is advanced API. If you are just running tests, you probably don't need this. It is primarily used by library authors.
+This is advanced API. If you just want to [run tests](/guide/), you probably don't need this. It is primarily used by library authors.
 :::
 
 You can specify a path to your test runner with the `runner` option in your configuration file. This file should have a default export with a class constructor implementing these methods:
diff --git a/docs/guide/in-source.md b/docs/guide/in-source.md
index 4a43c6423ef1..29822f177841 100644
--- a/docs/guide/in-source.md
+++ b/docs/guide/in-source.md
@@ -4,10 +4,14 @@ title: In-Source Testing | Guide
 
 # In-Source Testing
 
-Vitest also provides a way to run tests within your source code along side the implementation, similar to [Rust's module tests](https://doc.rust-lang.org/book/ch11-03-test-organization.html#the-tests-module-and-cfgtest).
+Vitest provides a way to run tests within your source code along side the implementation, similar to [Rust's module tests](https://doc.rust-lang.org/book/ch11-03-test-organization.html#the-tests-module-and-cfgtest).
 
 This makes the tests share the same closure as the implementations and able to test against private states without exporting. Meanwhile, it also brings a closer feedback loop for development.
 
+::: warning
+This guide explains how to write tests inside your source code. If you need to write tests in separate test files, follow the ["Writing Tests" guide](/guide/#writing-tests).
+:::
+
 ## Setup
 
 To get started, put a `if (import.meta.vitest)` block at the end of your source file and write some tests inside it. For example: