diff --git a/agents/ten_packages/extension/openai_v2v_python/extension.py b/agents/ten_packages/extension/openai_v2v_python/extension.py
index 3ae55d71..5c39968e 100644
--- a/agents/ten_packages/extension/openai_v2v_python/extension.py
+++ b/agents/ten_packages/extension/openai_v2v_python/extension.py
@@ -484,14 +484,14 @@ def _fetch_properties(self, ten_env: TenEnv):
         try:
             voice = ten_env.get_property_string(PROPERTY_VOICE)
             if voice:
-                v = DEFAULT_VOICE
-                if voice == "alloy":
-                    v = Voices.Alloy
-                elif voice == "echo":
-                    v = Voices.Echo
-                elif voice == "shimmer":
-                    v = Voices.Shimmer
-                self.config.voice = v
+                # v = DEFAULT_VOICE
+                # if voice == "alloy":
+                #     v = Voices.Alloy
+                # elif voice == "echo":
+                #     v = Voices.Echo
+                # elif voice == "shimmer":
+                #     v = Voices.Shimmer
+                self.config.voice = voice
         except Exception as err:
             logger.info(f"GetProperty optional {PROPERTY_VOICE} error: {err}")
 
diff --git a/demo/src/app/api/agents/start/graph.tsx b/demo/src/app/api/agents/start/graph.tsx
index e1c68163..a2f55dc2 100644
--- a/demo/src/app/api/agents/start/graph.tsx
+++ b/demo/src/app/api/agents/start/graph.tsx
@@ -15,7 +15,7 @@ export const voiceNameMap: LanguageMap = {
             female: "Zhiyu",
         },
         openai: {
-            male: "alloy",
+            male: "ash",
             female: "shimmer"
         }
     },
@@ -33,7 +33,7 @@ export const voiceNameMap: LanguageMap = {
             female: "Ruth",
         },
         openai: {
-            male: "alloy",
+            male: "ash",
             female: "shimmer"
         }
     },
@@ -43,7 +43,7 @@ export const voiceNameMap: LanguageMap = {
             female: "ja-JP-NanamiNeural",
         },
         openai: {
-            male: "alloy",
+            male: "ash",
             female: "shimmer"
         }
     },
@@ -53,7 +53,7 @@ export const voiceNameMap: LanguageMap = {
             female: "ko-KR-JiMinNeural",
         },
         openai: {
-            male: "alloy",
+            male: "ash",
             female: "shimmer"
         }
     },