diff --git a/DHT.cpp b/DHT.cpp
index a48ac74..bfab226 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -74,7 +74,7 @@ void DHT::begin(uint8_t usec) {
 
 /*!
  *  @brief  Read temperature
- *  @param  S
+ *  @param  Scaling
  *          Scale. Boolean value:
  *					- true = Fahrenheit
  *					- false = Celcius
@@ -82,7 +82,7 @@ void DHT::begin(uint8_t usec) {
  *          true if in force mode
  *	@return Temperature value in selected scale
  */
-float DHT::readTemperature(bool S, bool force) {
+float DHT::readTemperature(bool Scaling, bool force) {
   float f = NAN;
 
   if (read(force)) {
@@ -93,7 +93,7 @@ float DHT::readTemperature(bool S, bool force) {
         f = -1 - f;
       }
       f += (data[3] & 0x0f) * 0.1;
-      if (S) {
+      if (Scaling) {
         f = convertCtoF(f);
       }
       break;
@@ -103,7 +103,7 @@ float DHT::readTemperature(bool S, bool force) {
       if (data[2] & 0x80) {
         f *= -1;
       }
-      if (S) {
+      if (Scaling) {
         f = convertCtoF(f);
       }
       break;
@@ -114,7 +114,7 @@ float DHT::readTemperature(bool S, bool force) {
       if (data[2] & 0x80) {
         f *= -1;
       }
-      if (S) {
+      if (Scaling) {
         f = convertCtoF(f);
       }
       break;
diff --git a/DHT.h b/DHT.h
index 95570e1..114955a 100644
--- a/DHT.h
+++ b/DHT.h
@@ -64,7 +64,7 @@ class DHT {
 public:
   DHT(uint8_t pin, uint8_t type, uint8_t count = 6);
   void begin(uint8_t usec = 55);
-  float readTemperature(bool S = false, bool force = false);
+  float readTemperature(bool Scaling = false, bool force = false);
   float convertCtoF(float);
   float convertFtoC(float);
   float computeHeatIndex(bool isFahrenheit = true);