diff --git a/LiquidCrystal.cpp b/LiquidCrystal.cpp
index 23713f4..04d0f50 100644
--- a/LiquidCrystal.cpp
+++ b/LiquidCrystal.cpp
@@ -3,7 +3,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <inttypes.h>
-#include "WProgram.h"
+#include "Arduino.h"
 
 // When the display powers up, it is configured as follows:
 //