diff --git a/libraries/MAX31855/MAX31855.cpp b/libraries/MAX31855/MAX31855.cpp
index 5dfe7f9d..2a3bbe8c 100644
--- a/libraries/MAX31855/MAX31855.cpp
+++ b/libraries/MAX31855/MAX31855.cpp
@@ -1,12 +1,13 @@
 //
 //    FILE: MAX31855.cpp
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.02
+// VERSION: 0.1.03
 // PURPOSE: MAX31855 - Thermocouple
 //    DATE: 2014-01-01
 //     URL:
 //
-// HISTORY: 
+// HISTORY:
+// 0.1.03 fixed negative temperature
 // 0.1.02 added offset
 // 0.1.01 refactored speed/performance
 // 0.1.00 initial version.
@@ -46,7 +47,10 @@ uint8_t MAX31855::read()
 
     // process internal bit 4-15
     _internal = (value & 0x07FF) * 0.0625;
-    if (value & 0x0800) _internal *= -1;
+    if (value & 0x0800)
+    {
+        _internal = -128 + _internal;  // fix neg temp
+    }
     value >>= 12;
 
     // Fault bit ignored as we have the 3 status bits
@@ -58,7 +62,10 @@ uint8_t MAX31855::read()
 
     // process temperature bit 18-31
     _temperature = (value & 0x1FFF) * 0.25;
-    if (value & 0x2000) _temperature *= -1;
+    if (value & 0x2000) // negative flag
+    {
+        _temperature = -2048 + _temperature;  // fix neg temp
+    }
     if (_offset != 0) _temperature += _offset;
 
     return _status;
diff --git a/libraries/MAX31855/MAX31855.h b/libraries/MAX31855/MAX31855.h
index 4515c8be..449cca3b 100644
--- a/libraries/MAX31855/MAX31855.h
+++ b/libraries/MAX31855/MAX31855.h
@@ -3,7 +3,7 @@
 //
 //    FILE: MAX31855.h
 //  AUTHOR: Rob Tillaart
-// VERSION: 0.1.02
+// VERSION: 0.1.03
 // PURPOSE: MAX31855 - Thermocouple
 //    DATE: 2014-01-01
 //     URL:
@@ -17,7 +17,7 @@
 #include "Arduino.h"
 #endif
 
-#define MAX31855_VERSION "0.1.02"
+#define MAX31855_VERSION "0.1.03"
 
 #define STATUS_OK               0x00
 #define STATUS_OPEN_CIRCUIT     0x01
@@ -34,10 +34,10 @@ public:
     // Celsius
     float getTemperature(void) { return _temperature; };
     uint8_t getStatus(void) {return _status; };
-    
+
     void setOffset(float t) { _offset = t; };
     float getOffset(float t) { return _offset; };
-    
+
 
 private:
     uint32_t _read();