diff --git a/changes/1105-tribals.md b/changes/1105-tribals.md
new file mode 100644
index 0000000..ee40cf3
--- /dev/null
+++ b/changes/1105-tribals.md
@@ -0,0 +1 @@
+docs: Fix explanation of case sensitive environment variable names when populating `BaseSettings` subclass attributes.
diff --git a/docs/usage/settings.md b/docs/usage/settings.md
index b23188f..77b79eb 100644
--- a/docs/usage/settings.md
+++ b/docs/usage/settings.md
@@ -50,8 +50,11 @@ Case-sensitivity can be turned on through the `Config`:
 {!.tmp_examples/settings_case_sensitive.py!}
 ```
 
-When `case_sensitive` is `True`, the environment variable must be in all-caps,
-so in this example `redis_host` could only be modified via `export REDIS_HOST`.
+When `case_sensitive` is `True`, the environment variable names must match field names (optionally with a prefix),
+so in this example
+`redis_host` could only be modified via `export redis_host`. If you want to name environment variables
+all upper-case, you should name attribute all upper-case too. You can still name environment variables anything
+you like through `Field(..., env=...)`.
 
 !!! note
     On Windows, python's `os` module always treats environment variables as case-insensitive, so the