diff --git a/src/MCUTempSensor.cpp b/src/MCUTempSensor.cpp
index 304034d..dc7782c 100644
--- a/src/MCUTempSensor.cpp
+++ b/src/MCUTempSensor.cpp
@@ -100,7 +100,7 @@
     thresholds::checkThresholds(this);
 }
 
-int MCUTempSensor::getMCURegsInfoWord(uint8_t regs, int16_t* pu16data) const
+int MCUTempSensor::getMCURegsInfoWord(uint8_t regs, int32_t* pu32data) const
 {
     std::string i2cBus = "/dev/i2c-" + std::to_string(busId);
 
@@ -137,10 +137,10 @@
         return -1;
     }
 
-    *pu16data = i2c_smbus_read_word_data(fd, regs);
+    *pu32data = i2c_smbus_read_word_data(fd, regs);
     close(fd);
 
-    if (*pu16data < 0)
+    if (*pu32data < 0)
     {
         std::cerr << " read word data failed at " << static_cast<int>(regs)
                   << "\n";
@@ -166,7 +166,7 @@
             std::cerr << "timer error\n";
             return;
         }
-        int16_t temp = 0;
+        int32_t temp = 0;
         int ret = getMCURegsInfoWord(tempReg, &temp);
         if (ret >= 0)
         {
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;
 };