diff --git a/docs/usage/configuration-options.md b/docs/usage/configuration-options.md
index 95e2578246cf52b2e8ac8e74c98345cf318eff93..c8eb2d5793646783d468afad684516ef4148a641 100644
--- a/docs/usage/configuration-options.md
+++ b/docs/usage/configuration-options.md
@@ -1837,11 +1837,11 @@ For example, GitHub might automerge a Renovate branch even if it's behind the ba
 
 ## platformCommit
 
-Supports only GitHub App mode and not when using Personal Access Tokens.
+Only use this option if you run Renovate as a [GitHub App](https://docs.github.com/en/developers/apps/getting-started-with-apps/about-apps).
+It does not apply when you use a Personal Access Token as credential.
 
-To avoid errors, `gitAuthor` or `gitIgnoredAuthors` should be manually adjusted accordingly.
-
-The primary reason to use this option is because commits will then be signed automatically if authenticating as an app.
+When `platformCommit` is enabled, Renovate will create commits with GitHub's API instead of using `git` directly.
+This way Renovate can use GitHub's [Commit signing support for bots and other GitHub Apps](https://github.blog/2019-08-15-commit-signing-support-for-bots-and-other-github-apps/) feature.
 
 ## postUpdateOptions