diff --git a/src/discord_notifier/__main__.py b/src/discord_notifier/__main__.py
index 2439bbf..31e54b6 100644
--- a/src/discord_notifier/__main__.py
+++ b/src/discord_notifier/__main__.py
@@ -17,7 +17,7 @@ class APISession(Session):
         super().__init__()
     
     def request(self, method: str | bytes, url: str | bytes, *args, **kwargs) -> Response:
-        url = urljoin(self.base_url + url)
+        url = urljoin(self.base_url, url)
         return super().request(method, url, *args, **kwargs)
 
 logfile_webhook = None