diff --git a/README.md b/README.md
index 04a3ad4..5253b50 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@
 
 3. Initialize Mastodon.py with e.g. `masto.py` (please refer to the [Mastodon.py docs](https://mastodonpy.readthedocs.io)).
 
-4. Set all `.env` variables if there are any remaining.
+4. Set all `.env` variables if there are any remaining. (The code does not check for missing environment variables and assumes that everything is set correctly.)
 
 5. Create a script `post_toots.sh` and make it executable `chmod +x post_toots.sh`: