--- groff-1.12.orig/groff/groff.cc
+++ groff-1.12/groff/groff.cc
@@ -114,7 +114,7 @@
     command_prefix = PROG_PREFIX;
   commands[TROFF_INDEX].set_name(command_prefix, "troff");
   while ((opt = getopt(argc, argv,
-		       "abCd:eEf:F:hiI:lL:m:M:n:No:pP:r:RsStT:vVw:W:XzZ"))
+		       "abCd:eEf:F:hiI:lL:m:M:n:No:pP:r:RsStT:UvVw:W:XzZ"))
 	 != EOF) {
     char buf[3];
     buf[0] = '-';
--- groff-1.12.orig/troff/troff.man
+++ groff-1.12/troff/troff.man
@@ -47,7 +47,7 @@
 .ie \\n(.$-1 .RI "[\ \fB\\$1\fP" "\\$2" "\ ]"
 .el .RB "[\ " "\\$1" "\ ]"
 ..
-.OP \-abivzCER
+.OP \-abivzCERU
 .OP \-w name
 .OP \-W name
 .OP \-d cs