diff --git a/DHT.h b/DHT.h
index 0e1d544..553329e 100644
--- a/DHT.h
+++ b/DHT.h
@@ -1,5 +1,8 @@
-
-#include <WProgram.h>
+#if ARDUINO >= 100
+ #include "Arduino.h"
+#else
+ #include "WProgram.h"
+#endif
 
 /* DHT library