diff --git a/homeassistant/components/esphome/assist_satellite.py b/homeassistant/components/esphome/assist_satellite.py
index 073a1ec8ae9..53d5d449be8 100644
--- a/homeassistant/components/esphome/assist_satellite.py
+++ b/homeassistant/components/esphome/assist_satellite.py
@@ -332,7 +332,7 @@ class EsphomeAssistSatellite(
             }
         elif event_type == VoiceAssistantEventType.VOICE_ASSISTANT_RUN_START:
             assert event.data is not None
-            if tts_output := event.data["tts_output"]:
+            if tts_output := event.data.get("tts_output"):
                 path = tts_output["url"]
                 url = async_process_play_media_url(self.hass, path)
                 data_to_send = {"url": url}