diff --git a/engine/core/duplex_pipeline.py b/engine/core/duplex_pipeline.py
index aece39f..0c68971 100644
--- a/engine/core/duplex_pipeline.py
+++ b/engine/core/duplex_pipeline.py
@@ -415,7 +415,7 @@ class DuplexPipeline:
         })
 
         if not is_final:
-            logger.info(f"ASR interim: {text[:100]}")
+            logger.info(f"[ASR] ASR interim: {text[:100]}")
         logger.debug(f"Sent transcript ({'final' if is_final else 'interim'}): {text[:50]}...")
 
     async def _on_speech_start(self) -> None: