Index: usr.bin/ar/ar.1
===================================================================
--- usr.bin/ar/ar.1
+++ usr.bin/ar/ar.1
@@ -314,7 +314,10 @@
 in the order in which they appear in the archive, one per line.
 If no files are specified, all files in the archive are listed.
 .It Fl T
-Deprecated alias for
+Not supported.
+In earlier versions of
+.Nm .
+it was an alias for
 .Fl f .
 In other implementations of
 .Nm ,
Index: usr.bin/ar/ar.c
===================================================================
--- usr.bin/ar/ar.c
+++ usr.bin/ar/ar.c
@@ -227,8 +227,7 @@
 			bsdar->options |= AR_S;
 			break;
 		case 'T':
-			warnx("-T is deprecated");
-			bsdar->options |= AR_TR;
+			errx(1, "-T is not supported");
 			break;
 		case 't':
 			set_mode(bsdar, opt);