diff --git a/tests/test_init.py b/tests/test_init.py
index e32e5d7..4cb1d3a 100644
--- a/tests/test_init.py
+++ b/tests/test_init.py
@@ -7,4 +7,4 @@
 async def test_basic():
     async with Client() as client:
         await client.init_speaker(1)
-        assert await client.check_inited_speaker(1)
+        assert await client.is_inited_speaker(1)
diff --git a/vvclient/client.py b/vvclient/client.py
index df8befa..a2ed8e0 100644
--- a/vvclient/client.py
+++ b/vvclient/client.py
@@ -93,3 +93,11 @@ async def init_speaker(self, speaker: int, *, skip_reinit: bool = False, core_ve
         if core_version:
             params["core_version"] = core_version
         await self.http.initialize_speaker(params)
+
+    async def is_inited_speaker(self, speaker: int, *, core_version: Optional[str] = None) -> bool:
+        params = {
+            "speaker": speaker
+        }
+        if core_version:
+            params["core_version"] = core_version
+        return await self.http.is_initialized_speaker(params)
diff --git a/vvclient/http.py b/vvclient/http.py
index 5b00be1..f2e97b7 100644
--- a/vvclient/http.py
+++ b/vvclient/http.py
@@ -62,5 +62,5 @@ async def core_versions(self) -> List[str]:
     async def initialize_speaker(self, params: Dict[str, Union[str, int]]) -> None:
         return await self.request(Route("POST", "/initialize_speaker"), params=params)
 
-    async def is_initialized_speaker(self, params: Dict[str, Union[str, int]) -> bool:
+    async def is_initialized_speaker(self, params: Dict[str, Union[str, int]]) -> bool:
         return await self.request(Route("GET", "/is_initialized_speaker"), params=params)