diff --git a/DHT.cpp b/DHT.cpp
index 86ad91c..b051670 100644
--- a/DHT.cpp
+++ b/DHT.cpp
@@ -120,7 +120,7 @@ float DHT::computeHeatIndex(float temperature, float percentHumidity, bool isFah
   return isFahrenheit ? hi : convertFtoC(hi);
 }
 
-boolean DHT::read(bool force) {
+bool DHT::read(bool force) {
   // Check if sensor was read less than two seconds ago and return early
   // to use last reading.
   uint32_t currenttime = millis();
diff --git a/DHT.h b/DHT.h
index d81f6db..dd52090 100644
--- a/DHT.h
+++ b/DHT.h
@@ -44,7 +44,7 @@ class DHT {
    float convertFtoC(float);
    float computeHeatIndex(float temperature, float percentHumidity, bool isFahrenheit=true);
    float readHumidity(bool force=false);
-   boolean read(bool force=false);
+   bool read(bool force=false);
 
  private:
   uint8_t data[5];