diff --git a/man/tio.1.in b/man/tio.1.in
index 048a5cd..cf72afb 100644
--- a/man/tio.1.in
+++ b/man/tio.1.in
@@ -257,6 +257,8 @@ Set timestamp format
 Map special characters on input or output
 .IP "\fBcolor"
 Colorize tio text using ANSI color code ranging from 0 to 255.
+.IP "\fBhex-mode"
+Enable hexadecimal mode
 .IP "\fBsocket"
 Set socket path (must include
 .BR unix: ).
diff --git a/src/configfile.c b/src/configfile.c
index 8327775..617b31d 100644
--- a/src/configfile.c
+++ b/src/configfile.c
@@ -154,7 +154,17 @@ static int data_handler(void *user, const char *section, const char *name,
             {
                 option.local_echo = false;
             }
-
+        }
+        else if (!strcmp(name, "hex-mode"))
+        {
+            if (!strcmp(value, "enable"))
+            {
+                option.hex_mode = true;
+            }
+            else if (!strcmp(value, "disable"))
+            {
+                option.hex_mode = false;
+            }
         }
         else if (!strcmp(name, "timestamp"))
         {