diff --git a/src/MCUTempSensor.hpp b/src/MCUTempSensor.hpp
index 639e24e..4007546 100644
--- a/src/MCUTempSensor.hpp
+++ b/src/MCUTempSensor.hpp
@@ -28,7 +28,7 @@
     uint8_t tempReg;
 
   private:
-    int getMCURegsInfoWord(uint8_t regs, int16_t* pu16data) const;
+    int getMCURegsInfoWord(uint8_t regs, int32_t* pu32data) const;
     sdbusplus::asio::object_server& objectServer;
     boost::asio::steady_timer waitTimer;
 };