diff --git a/src/Device/ClientReporter.h b/src/Device/ClientReporter.h
index cc6c08e..ec8d340 100644
--- a/src/Device/ClientReporter.h
+++ b/src/Device/ClientReporter.h
@@ -2,7 +2,7 @@
 #define ClientReporter_h
 
 #include <Device/DeviceDriver.h>
-#include <arduino.h>
+#include <Arduino.h>
 
 /**
  * This abstract class declares method signatures for any class that would like
diff --git a/src/Device/DeviceDriver.h b/src/Device/DeviceDriver.h
index ef7291d..b73b8be 100644
--- a/src/Device/DeviceDriver.h
+++ b/src/Device/DeviceDriver.h
@@ -7,7 +7,7 @@
  *
  */
 
-#include <arduino.h>
+#include <Arduino.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
diff --git a/src/Device/LogicalUnitInfo.h b/src/Device/LogicalUnitInfo.h
index 03e966f..8b50409 100644
--- a/src/Device/LogicalUnitInfo.h
+++ b/src/Device/LogicalUnitInfo.h
@@ -1,7 +1,7 @@
 #ifndef LogicalUnitInfo_h
 #define LogicalUnitInfo_h
 
-#include <arduino.h>
+#include <Arduino.h>
 #include "DeviceDefine.h"
 
 class LogicalUnitInfo {