diff --git a/cpp/include/kvikio/remote_handle.hpp b/cpp/include/kvikio/remote_handle.hpp
index 4de79e2145..bde743ce42 100644
--- a/cpp/include/kvikio/remote_handle.hpp
+++ b/cpp/include/kvikio/remote_handle.hpp
@@ -174,6 +174,7 @@ class CurlHandle {
         ss << "(" << msg << ")";
       }
       if (err == CURLE_WRITE_ERROR) { ss << "[maybe the server doesn't support file ranges?]"; }
+      std::cout << "perform() - error: " << ss.str() << std::endl;
       throw std::runtime_error(ss.str());
     }
   }