1 files changed, 4 insertions, 4 deletions

diff --git a/src/config.rs b/src/config.rs
index c05c3ae..09eabeb 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -75,7 +75,7 @@ pub struct Config {
     pub llm_api_url: String,
     pub database_path: String,
     /// Optional path to the Piper TTS `.onnx` model (or a directory of models).
-    /// When unset, TTS falls back to Google Translate TTS.
+    /// When unset, TTS commands fail; there is no external fallback.
     pub tts_model_path: Option<String>,
     /// Piper voice name, used to resolve the model file when `tts_model_path`
     /// points at a directory. Ignored when it points at a `.onnx` file directly.
@@ -168,7 +168,7 @@ const ENV_VARS: &[EnvVar] = &[
         name: "TTS_MODEL_PATH",
         required: false,
         default: None,
-        description: "Path to a Piper TTS .onnx model (or a models directory). Unset => Google TTS fallback",
+        description: "Path to a Piper TTS .onnx model (or a models directory); TTS is disabled when unset",
     },
     EnvVar {
         name: "TTS_VOICE",
@@ -284,11 +284,11 @@ impl Config {
         }
     }
 
-    /// Resolve the Piper model path to pass to the `piper` CLI.
+    /// Resolve the Piper model path passed to `piper-rs` (in-process).
     ///
     /// - `TTS_MODEL_PATH` set to a `.onnx` file => used verbatim.
     /// - `TTS_MODEL_PATH` set to a directory => `{dir}/{TTS_VOICE}.onnx`.
-    /// - `TTS_MODEL_PATH` unset => `None` (caller falls back to Google TTS).
+    /// - `TTS_MODEL_PATH` unset => `None` (TTS is unavailable).
     pub fn piper_model_path(&self) -> Option<std::path::PathBuf> {
         let configured = self.tts_model_path.as_ref()?;
         let path = std::path::PathBuf::from(configured);