diff --git a/src/shared/audio/ISTTEngine.hpp b/src/shared/audio/ISTTEngine.hpp
index a43a1a3..2a9a6db 100644
--- a/src/shared/audio/ISTTEngine.hpp
+++ b/src/shared/audio/ISTTEngine.hpp
@@ -8,9 +8,9 @@
 namespace aissia {
 
 /**
- * @brief Callback for transcription results
+ * @brief Callback for transcription results (low-level engine)
  */
-using TranscriptionCallback = std::function<void(const std::string& text)>;
+using STTEngineCallback = std::function<void(const std::string& text)>;
 
 /**
  * @brief Interface for Speech-to-Text engines