diff --git a/custom_components/bangolufsen/manifest.json b/custom_components/bangolufsen/manifest.json
index e4a54e1..41b6db1 100644
--- a/custom_components/bangolufsen/manifest.json
+++ b/custom_components/bangolufsen/manifest.json
@@ -8,6 +8,6 @@
 	"iot_class": "local_push",
 	"issue_tracker": "https://github.com/bang-olufsen/bangolufsen-hacs/issues",
 	"requirements": ["mozart-api==3.2.1.150.2"],
-	"version": "1.5.5",
+	"version": "1.5.6",
 	"zeroconf": ["_bangolufsen._tcp.local."]
 }
diff --git a/custom_components/bangolufsen/media_player.py b/custom_components/bangolufsen/media_player.py
index ceb92ac..cdda377 100644
--- a/custom_components/bangolufsen/media_player.py
+++ b/custom_components/bangolufsen/media_player.py
@@ -1322,7 +1322,7 @@ async def async_overlay_audio(
         absolute_volume: int | None = None,
         volume_offset: int | None = None,
         tts: str | None = None,
-        tts_language: str | None = None,
+        tts_language: str = "en-us",
     ) -> None:
         """Overlay audio over any currently playing audio."""