diff --git a/defines.h b/defines.h
index cf65901d3..fa0ccba7c 100644
--- a/defines.h
+++ b/defines.h
@@ -850,8 +850,4 @@ struct winsize {
 # endif /* gcc version */
 #endif /* __predict_true */
 
-#ifndef __unused
-# define __unused
-#endif
-
 #endif /* _DEFINES_H */