diff --git a/man/tio.1.in b/man/tio.1.in
index ac03318..936ab5c 100644
--- a/man/tio.1.in
+++ b/man/tio.1.in
@@ -167,6 +167,8 @@ Map DEL to BS on output
 Map NL to CR-NL on output
 .IP "\fBOLTU"
 Map lowercase characters to uppercase on output
+.IP "\fBMSB2LSB"
+Map MSB bit order to LSB on output
 .P
 If defining more than one flag, the flags must be comma separated.
 .RE
diff --git a/man/tio.1.txt b/man/tio.1.txt
index 0399b63..3e03611 100644
--- a/man/tio.1.txt
+++ b/man/tio.1.txt
@@ -131,6 +131,8 @@ OPTIONS
 
               OLTU        Map lowercase characters to uppercase on output
 
+              MSB2LSB     Map MSB bit order to LSB on output
+
               If defining more than one flag, the flags must be comma separated.
 
        -x, --hexadecimal
diff --git a/src/bash-completion/tio.in b/src/bash-completion/tio.in
index ca115e6..7e110f6 100644
--- a/src/bash-completion/tio.in
+++ b/src/bash-completion/tio.in
@@ -94,7 +94,7 @@ _tio()
             return 0
             ;;
         -m | --map)
-            COMPREPLY=( $(compgen -W "ICRNL IGNCR INLCR INLCRNL OCRNL ODELBS ONLCRNL" -- ${cur}) )
+            COMPREPLY=( $(compgen -W "ICRNL IGNCR INLCR INLCRNL OCRNL ODELBS ONLCRNL MSB2LSB" -- ${cur}) )
             return 0
             ;;
         -t | --timestamp)