diff --git a/README.md b/README.md
index 712d66f..1e82059 100644
--- a/README.md
+++ b/README.md
@@ -15,8 +15,9 @@
 >   are not replayed in the history; they carry no results, and the model then disowns
 >   its own answers and searches again.
 > - [#5](https://github.com/adamjs83/ha-openai-compatible/issues/5): the home location
->   lookup for web search uses the subentry's model instead of `gpt-4o-mini`, and a
->   failed lookup no longer blocks saving the options.
+>   lookup for web search uses the subentry's model instead of `gpt-4o-mini` and asks
+>   as a user message (Anthropic needs one); a failed lookup no longer blocks saving
+>   the options, and empty location fields are left out of the web search tool.
 >
 > HACS only installs from GitHub, so this fork is installed by copying
 > `custom_components/openai_compatible` into the Home Assistant config.