diff --git a/extensions/qqbot/src/config-schema.ts b/extensions/qqbot/src/config-schema.ts
index 56610e576ec..6929f98c733 100644
--- a/extensions/qqbot/src/config-schema.ts
+++ b/extensions/qqbot/src/config-schema.ts
@@ -15,31 +15,24 @@ const AudioFormatPolicySchema = z
 
 const QQBotSpeechQueryParamsSchema = z.record(z.string(), z.string()).optional();
 
-const QQBotTtsSchema = z
-  .object({
-    enabled: z.boolean().optional(),
-    provider: z.string().optional(),
-    baseUrl: z.string().optional(),
-    apiKey: z.string().optional(),
-    model: z.string().optional(),
-    voice: z.string().optional(),
-    authStyle: z.enum(["bearer", "api-key"]).optional(),
-    queryParams: QQBotSpeechQueryParamsSchema,
-    speed: z.number().optional(),
-  })
+const QQBotSpeechProviderSchema = z.object({
+  enabled: z.boolean().optional(),
+  provider: z.string().optional(),
+  baseUrl: z.string().optional(),
+  apiKey: z.string().optional(),
+  model: z.string().optional(),
+});
+
+const QQBotTtsSchema = QQBotSpeechProviderSchema.extend({
+  voice: z.string().optional(),
+  authStyle: z.enum(["bearer", "api-key"]).optional(),
+  queryParams: QQBotSpeechQueryParamsSchema,
+  speed: z.number().optional(),
+})
   .strict()
   .optional();
 
-const QQBotSttSchema = z
-  .object({
-    enabled: z.boolean().optional(),
-    provider: z.string().optional(),
-    baseUrl: z.string().optional(),
-    apiKey: z.string().optional(),
-    model: z.string().optional(),
-  })
-  .strict()
-  .optional();
+const QQBotSttSchema = QQBotSpeechProviderSchema.strict().optional();
 
 const QQBotStreamingSchema = z
   .union([