diff --git a/jquantsapi/client.py b/jquantsapi/client.py
index 1b9ba70..b54cd5d 100644
--- a/jquantsapi/client.py
+++ b/jquantsapi/client.py
@@ -230,7 +230,8 @@ def _get(self, url: str, params: Optional[dict] = None) -> requests.Response:
         headers = self._base_headers()
         ret = s.get(url, params=params, headers=headers, timeout=30)
         if ret.status_code == 400:
-            raise HTTPError(ret.status_code, ret.json())
+            msg = f"{ret.status_code} for url: {ret.url} body: {ret.text}"
+            raise HTTPError(msg, response=ret)
         ret.raise_for_status()
         return ret