diff --git a/.github/vale/styles/Aiven/capitalization_headings.yml b/.github/vale/styles/Aiven/capitalization_headings.yml
index 785a28e175..6e77edf770 100644
--- a/.github/vale/styles/Aiven/capitalization_headings.yml
+++ b/.github/vale/styles/Aiven/capitalization_headings.yml
@@ -10,6 +10,7 @@ exceptions:
   - Amazon
   - Amazon Aurora
   - Amazon Web Services
+  - API
   - APIs
   - Aiven
   - Aiven Console