diff --git a/thermistor.cpp b/thermistor.cpp
index ae8b2ab..2bc988b 100755
--- a/thermistor.cpp
+++ b/thermistor.cpp
@@ -1,23 +1,23 @@
 /**
  * Copyright (c) 2014 panStamp <contact@panstamp.com>
- * 
+ *
  * This file is part of the panStamp project.
- * 
+ *
  * panStamp  is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Lesser General Public License as published by
  * the Free Software Foundation; either version 3 of the License, or
  * any later version.
- * 
+ *
  * panStamp is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  * GNU Lesser General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU Lesser General Public License
  * along with panStamp; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  * USA
- * 
+ *
  * Author: Daniel Berenguer
  * Creation date: 11/05/2014
  *
@@ -39,7 +39,7 @@
 #define TEMPERATURENOMINAL 25
 
 // Number of ADC samples
-#define NUMSAMPLES         5 
+#define NUMSAMPLES         5
 
 // ADC resolution
 #if defined(PANSTAMP_NRG) || defined(ESP_PLATFORM)
@@ -50,7 +50,7 @@
 #define VERBOSE_SENSOR_ENABLED 1
 /**
  * THERMISTOR
- * 
+ *
  * Class constructor
  *
  * @param adcPin Analog pin where the thermistor is connected
@@ -58,7 +58,7 @@
  * @param bCoef beta coefficient of the thermistor
  * @param serialRes Value of the serial resistor
  */
-THERMISTOR::THERMISTOR(uint8_t adcPin, uint16_t nomRes, uint16_t bCoef, uint16_t serialRes) 
+THERMISTOR::THERMISTOR(uint8_t adcPin, uint16_t nomRes, uint16_t bCoef, uint16_t serialRes)
 {
   analogPin = adcPin;
   nominalResistance = nomRes;
@@ -92,20 +92,20 @@ int THERMISTOR::read(void)
   }
   average /= NUMSAMPLES;
 
-  #ifdef VERBOSE_SENSOR_ENABLED  
-  Serial.print("Average analog reading "); 
+  #ifdef VERBOSE_SENSOR_ENABLED
+  Serial.print("Average analog reading ");
   Serial.println(average);
   #endif
- 
+
   // convert the value to resistance
   average = ADC_RESOLUTION / average - 1;
-  average = serialResistance * average;
+  average = serialResistance / average;
 
   #ifdef VERBOSE_SENSOR_ENABLED
-  Serial.print("Thermistor resistance "); 
+  Serial.print("Thermistor resistance ");
   Serial.println(average);
   #endif
- 
+
   float steinhart;
   steinhart = average / nominalResistance;     // (R/Ro)
   #ifdef PANSTAMP_NRG
@@ -117,13 +117,12 @@ int THERMISTOR::read(void)
   steinhart += 1.0 / (TEMPERATURENOMINAL + 273.15); // + (1/To)
   steinhart = 1.0 / steinhart;                 // Invert
   steinhart -= 273.15;                         // convert to C
- 
+
   #ifdef VERBOSE_SENSOR_ENABLED
-  Serial.print("Temperature "); 
+  Serial.print("Temperature ");
   Serial.print(steinhart);
   Serial.println(" *C");
   #endif
-  
+
   return (int)(steinhart * 10);
 }
-