diff --git a/include/stdio.h b/include/stdio.h
index c2c32eb26848..674a5c2f969d 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -106,7 +106,7 @@ typedef	struct __sFILE {
 	int	_w;		/* (*) write space left for putc() */
 	short	_flags;		/* (*) flags, below; this FILE is free if 0 */
 	short	_file;		/* (*) fileno, if Unix descriptor, else -1 */
-	struct	__sbuf _bf;	/* the buffer (at least 1 byte, if !NULL) */
+	struct	__sbuf _bf;	/* (*) the buffer (at least 1 byte, if !NULL) */
 	int	_lbfsize;	/* (*) 0 or -_bf._size, for inline putc */
 
 	/* operations */