diff --git a/src/pipecat/services/google/tts.py b/src/pipecat/services/google/tts.py
index 94f689d44..693c7e6a0 100644
--- a/src/pipecat/services/google/tts.py
+++ b/src/pipecat/services/google/tts.py
@@ -1218,7 +1218,7 @@ class GeminiTTSService(GoogleBaseTTSService):
         "Alnilam",
         "Aoede",
         "Autonoe",
-        "Callirhoe",
+        "Callirrhoe",
         "Charon",
         "Despina",
         "Enceladus",
@@ -1236,7 +1236,7 @@ class GeminiTTSService(GoogleBaseTTSService):
         "Sadachbia",
         "Sadaltager",
         "Schedar",
-        "Sulafar",
+        "Sulafat",
         "Umbriel",
         "Vindemiatrix",
         "Zephyr",
diff --git a/tests/test_google_tts.py b/tests/test_google_tts.py
new file mode 100644
index 000000000..539f5817f
--- /dev/null
+++ b/tests/test_google_tts.py
@@ -0,0 +1,10 @@
+from pipecat.services.google.tts import GeminiTTSService
+
+
+def test_gemini_tts_available_voices_match_documented_names():
+    voices = GeminiTTSService.AVAILABLE_VOICES
+
+    assert "Callirrhoe" in voices
+    assert "Sulafat" in voices
+    assert "Callirhoe" not in voices
+    assert "Sulafar" not in voices