diff --git a/konabot/plugins/typst/__init__.py b/konabot/plugins/typst/__init__.py
index a45d811..4de27e7 100644
--- a/konabot/plugins/typst/__init__.py
+++ b/konabot/plugins/typst/__init__.py
@@ -44,7 +44,7 @@ async def _(downloaded: bool):
     global bin_path
 
     tar_path = arti_typst_linux.target
-    bin_path = tar_path.with_name("typst")
+    bin_path = BINARY_PATH / "typst"
 
     if downloaded or not bin_path.exists():
         bin_path.unlink(missing_ok=True)
@@ -96,6 +96,8 @@ TEMPLATE = TEMPLATE_PATH.read_text()
 
 
 def render_sync(code: str) -> bytes | None:
+    global bin_path
+
     if bin_path is None:
         return
 
@@ -153,10 +155,13 @@ async def _(
     msg: UniMsg,
     target: DepLongTaskTarget,
 ):
+    global bin_path
+
     # 对于本地机器，一般不会在应用启动时自动下载，这里再保证存在
     await ensure_artifact(arti_typst_linux)
     await ensure_artifact(arti_typst_windows)
-    if bin_path is None:
+    if bin_path is None or not bin_path.exists():
+        logger.warning("当前环境不存在 Typst，但仍然调用了")
         return
 
     typst_code = ""