diff --git a/logfire/experimental/query_client.py b/logfire/experimental/query_client.py
index af3744f79..004e7dc96 100644
--- a/logfire/experimental/query_client.py
+++ b/logfire/experimental/query_client.py
@@ -108,7 +108,8 @@ def handle_response_errors(self, response: Response) -> None:
             raise QueryExecutionError(response.json())
         if response.status_code == 422:  # pragma: no cover
             raise QueryRequestError(response.json())
-        assert response.status_code == 200, response.content
+        if response.status_code != 200:
+            raise QueryExecutionError(f'Unexpected response status code: {response.status_code}, body: {response.text}')
 
 
 class LogfireQueryClient(_BaseLogfireQueryClient[Client]):