diff --git a/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp b/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp
index 02ba104..cc229d2 100644
--- a/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp
+++ b/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp
@@ -36,7 +36,8 @@
     void update();
 
   private:
-    void processResponse(int sendRecvMsgResult);
+    void processResponse(const std::error_code& ec,
+                         std::span<const uint8_t> buffer);
 
     uint8_t eid{};
 
@@ -55,7 +56,5 @@
 
     std::array<uint8_t, sizeof(gpu::GetPowerDrawRequest)> request{};
 
-    std::array<uint8_t, sizeof(gpu::GetPowerDrawResponse)> response{};
-
     std::shared_ptr<sdbusplus::asio::dbus_interface> telemetryReportInterface;
 };