diff --git a/RF24_config.h b/RF24_config.h
index c96fbbaa7..9a149c6de 100644
--- a/RF24_config.h
+++ b/RF24_config.h
@@ -129,7 +129,7 @@
   #define pgm_read_word(p) (*(p))
   #define PRIPSTR "%s"
 
-#elif defined(ARDUINO) && ! defined(__arm__) && !defined (__ARDUINO_X86__) && defined(XMEGA)
+#elif defined(ARDUINO) && ! defined(__arm__) && !defined (__ARDUINO_X86__) || defined(XMEGA)
 	#include <avr/pgmspace.h>
 	#define PRIPSTR "%S"
 #else