diff --git a/usr.bin/bintrans/bintrans.c b/usr.bin/bintrans/bintrans.c
--- a/usr.bin/bintrans/bintrans.c
+++ b/usr.bin/bintrans/bintrans.c
@@ -139,7 +139,7 @@
 		{NULL,		no_argument,		NULL, 0}
 	};
 
-	while ((ch = getopt_long(argc, argv, "diw:", opts, NULL)) != -1)
+	while ((ch = getopt_long(argc, argv, "+diw:", opts, NULL)) != -1)
 		switch (ch) {
 		case 'd':
 			decode = true;
diff --git a/usr.bin/bintrans/qp.c b/usr.bin/bintrans/qp.c
--- a/usr.bin/bintrans/qp.c
+++ b/usr.bin/bintrans/qp.c
@@ -181,7 +181,7 @@
 		{NULL,		no_argument,		NULL, 0}
 	};
 
-	while ((ch = getopt_long(argc, argv, "do:ru", opts, NULL)) != -1) {
+	while ((ch = getopt_long(argc, argv, "+do:ru", opts, NULL)) != -1) {
 		switch(ch) {
 		case 'o':
 			fpo = fopen(optarg, "w");