diff --git a/doc/settings/configuration.md b/doc/settings/configuration.md
index cb0b463477742ad967eb803b811ad1e6132af581_ZG9jL3NldHRpbmdzL2NvbmZpZ3VyYXRpb24ubWQ=..9fa3136d3f591ef96e13dc70aba4525ee6a802e8_ZG9jL3NldHRpbmdzL2NvbmZpZ3VyYXRpb24ubWQ= 100644
--- a/doc/settings/configuration.md
+++ b/doc/settings/configuration.md
@@ -641,6 +641,8 @@
    ```
 
    GitLab automatically provides secure default values for the CSP.
+   Explicitly setting the `<default_value>` value for a directive is equivalent to
+   not setting a value and will use the default values.
 
    To add a custom CSP: