diff --git a/livekit-agents/CHANGELOG.md b/livekit-agents/CHANGELOG.md
index ad835b06fb..d17ab84317 100644
--- a/livekit-agents/CHANGELOG.md
+++ b/livekit-agents/CHANGELOG.md
@@ -8,6 +8,8 @@
 
 - fix: invalid request on anthropic - [#1018](https://github.com/livekit/agents/pull/1018) ([@theomonnom](https://github.com/theomonnom))
 
+- fix: IndexError on tts metrics - [#1028](https://github.com/livekit/agents/pull/1028) ([@theomonnom](https://github.com/theomonnom))
+
 ## 0.11.0
 
 ### Minor Changes
diff --git a/livekit-agents/livekit/agents/tts/tts.py b/livekit-agents/livekit/agents/tts/tts.py
index e4c7b453ee..5502014f7b 100644
--- a/livekit-agents/livekit/agents/tts/tts.py
+++ b/livekit-agents/livekit/agents/tts/tts.py
@@ -176,6 +176,9 @@ def _emit_metrics():
             nonlocal start_time, audio_duration, ttfb, request_id
             duration = time.perf_counter() - start_time
 
+            if not self._mtc_pending_texts:
+                return
+
             text = self._mtc_pending_texts.pop(0)
             if not text:
                 return