diff --git a/Sprinter/Sd2Card.cpp b/Sprinter/Sd2Card.cpp
index 8222cfd..05832e7 100644
--- a/Sprinter/Sd2Card.cpp
+++ b/Sprinter/Sd2Card.cpp
@@ -17,7 +17,11 @@
  * along with the Arduino Sd2Card Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
+#if defined(ARDUINO) && ARDUINO >= 100
+#include <Arduino.h>
+#else
 #include <WProgram.h>
+#endif
 #include "Sd2Card.h"
 //------------------------------------------------------------------------------
 #ifndef SOFTWARE_SPI
diff --git a/Sprinter/SdFatUtil.h b/Sprinter/SdFatUtil.h
index de3fee3..361a5a2 100644
--- a/Sprinter/SdFatUtil.h
+++ b/Sprinter/SdFatUtil.h
@@ -23,7 +23,11 @@
  * \file
  * Useful utility functions.
  */
+#if defined(ARDUINO) && ARDUINO >= 100
+#include <Arduino.h>
+#else
 #include <WProgram.h>
+#endif
 #include <avr/pgmspace.h>
 /** Store and print a string in flash memory.*/
 #define PgmPrint(x) SerialPrint_P(PSTR(x))
diff --git a/Sprinter/SdFile.cpp b/Sprinter/SdFile.cpp
index 13f4c6a..c847e01 100644
--- a/Sprinter/SdFile.cpp
+++ b/Sprinter/SdFile.cpp
@@ -19,7 +19,11 @@
  */
 #include "SdFat.h"
 #include <avr/pgmspace.h>
+#if defined(ARDUINO) && ARDUINO >= 100
+#include <Arduino.h>
+#else
 #include <WProgram.h>
+#endif
 //------------------------------------------------------------------------------
 // callback function for date/time
 void (*SdFile::dateTime_)(uint16_t* date, uint16_t* time) = NULL;