diff --git a/utils/magic.h b/utils/magic.h
index 8f905edf..620102ed 100644
--- a/utils/magic.h
+++ b/utils/magic.h
@@ -173,9 +173,11 @@ extern char AbortMessage[];
 #if defined(__GNUC__) || defined(__clang__)
  #define ATTR_FORMAT_PRINTF_1 __attribute__((format (printf,1,2)))
  #define ATTR_FORMAT_PRINTF_2 __attribute__((format (printf,2,3)))
+ #define __unused__(x) x __attribute__((unused))
 #else
  #define ATTR_FORMAT_PRINTF_1 /* */
  #define ATTR_FORMAT_PRINTF_2 /* */
+ #define __unused__(x) x
 #endif
 
 /* ---------------- Start of Machine Configuration Section ----------------- */