--- usr.bin/tail/forward.c.orig	2015-10-09 20:25:57.000000000 +0200
+++ usr.bin/tail/forward.c	2015-10-09 20:26:31.000000000 +0200
@@ -282,7 +282,7 @@
 			return;
 		}
 
-		if (Fflag && fileno(file->fp) != STDIN_FILENO) {
+		if (Fflag && file->fp != stdin) {
 			EV_SET(&ev[n], fileno(file->fp), EVFILT_VNODE,
 			    EV_ADD | EV_ENABLE | EV_CLEAR,
 			    NOTE_DELETE | NOTE_RENAME, 0, 0);
@@ -322,7 +322,7 @@
 			if (no_files > 1 && !qflag)
 				printfn(file->file_name, 1);
 			forward(file->fp, file->file_name, style, off, &file->st);
-			if (Fflag && fileno(file->fp) != STDIN_FILENO)
+			if (Fflag && file->fp != stdin)
 				n++;
 		}
 	}
@@ -355,7 +355,7 @@
 						ev_change++;
 					continue;
 				}
-				if (fileno(file->fp) == STDIN_FILENO)
+				if (file->fp == stdin)
 					continue;
 				if (stat(file->file_name, &sb2) == -1) {
 					if (errno != ENOENT)