diff --git a/Marlin/fastio.h b/Marlin/fastio.h
index bd6efe670e..03a3a90366 100644
--- a/Marlin/fastio.h
+++ b/Marlin/fastio.h
@@ -54,7 +54,7 @@ typedef int8_t pin_t;
 #elif AVR_ATmega2561_FAMILY
   #include "fastio_1281.h"
 #else
-  #error "Pins for this chip not defined in Arduino.h! If you have a working pins definition, please contribute!"
+  #error "No FastIO definition for the selected AVR Board."
 #endif
 
 #include "macros.h"