diff --git a/hidusagestr.h b/hidusagestr.h
index 6c137e02..32ab0771 100644
--- a/hidusagestr.h
+++ b/hidusagestr.h
@@ -17,7 +17,7 @@ e-mail   :  support@circuitsathome.com
 #if !defined( __HIDUSAGESTR_H__)
 #define  __HIDUSAGESTR_H__
 
-#include <avr/pgmspace.h>
+#include "Usb.h"
 
 const char pstrSpace [] PROGMEM = " ";
 const char pstrCRLF [] PROGMEM = "\r\n";
diff --git a/hidusagetitlearrays.cpp b/hidusagetitlearrays.cpp
index 09d59302..0aa1b9c7 100644
--- a/hidusagetitlearrays.cpp
+++ b/hidusagetitlearrays.cpp
@@ -17,7 +17,6 @@ e-mail   :  support@circuitsathome.com
 #if !defined(__HIDUSAGETITLEARRAYS_H__)
 #define __HIDUSAGETITLEARRAYS_H__
 
-#include <avr/pgmspace.h>
 #include "hidusagestr.h"
 
 //const char *usagePageTitles0[]	PROGMEM =