diff --git a/src/configfile.c b/src/configfile.c
index 98fa117..56d158a 100644
--- a/src/configfile.c
+++ b/src/configfile.c
@@ -131,7 +131,7 @@ static int data_handler(void *user, const char *section, const char *name,
         else if ( !strcmp(name, "upcase"))
         {
             option.upcase = true;
-	}
+        }
         else if (!strcmp(name, "dtr-pulse-duration"))
         {
             option.dtr_pulse_duration = atoi(value);
diff --git a/src/options.c b/src/options.c
index 4170ac2..62e657a 100644
--- a/src/options.c
+++ b/src/options.c
@@ -97,7 +97,7 @@ void print_help(char *argv[])
     printf("  -c, --color 0..255|none|list     Colorize tio text (default: 15)\n");
     printf("  -S, --socket <socket>            Redirect I/O to file or network socket\n");
     printf("  -x, --hexadecimal                Enable hexadecimal mode\n");
-    printf("  -U, --upcase		       Translate lower case alpha to upper case\n");
+    printf("  -U, --upcase                     Translate lower case alpha to upper case\n");
     printf("  -v, --version                    Display version\n");
     printf("  -h, --help                       Display help\n");
     printf("\n");
@@ -208,8 +208,8 @@ void options_parse(int argc, char *argv[])
             {"stopbits",         required_argument, 0, 's'                  },
             {"parity",           required_argument, 0, 'p'                  },
             {"output-delay",     required_argument, 0, 'o'                  },
-	    {"eol-delay",        required_argument, 0, 'O'                  },
-	    {"upcase",           no_argument,       0, 'U'                  },
+            {"eol-delay",        required_argument, 0, 'O'                  },
+            {"upcase",           no_argument,       0, 'U'                  },
             {"dtr-pulse-duration",   required_argument, 0, OPT_DTR_PULSE_DURATION   },
             {"no-autoconnect",   no_argument,       0, 'n'                  },
             {"local-echo",       no_argument,       0, 'e'                  },
@@ -274,9 +274,9 @@ void options_parse(int argc, char *argv[])
                 option.output_delay = string_to_long(optarg);
                 break;
 
-	    case 'O':
-		option.eol_delay = string_to_long(optarg);
-		break;
+            case 'O':
+                option.eol_delay = string_to_long(optarg);
+                break;
 
             case OPT_DTR_PULSE_DURATION:
                 option.dtr_pulse_duration = string_to_long(optarg);
@@ -353,9 +353,9 @@ void options_parse(int argc, char *argv[])
                 option.hex_mode = true;
                 break;
 
-	    case 'U':
-		option.upcase = true;
-		break;
+            case 'U':
+                option.upcase = true;
+                break;
 
             case 'v':
                 printf("tio v%s\n", VERSION);
@@ -384,7 +384,7 @@ void options_parse(int argc, char *argv[])
 
     /* Assume first non-option is the tty device name */
     if (strcmp(option.tty_device, ""))
-	    optind++;
+            optind++;
     else if (optind < argc)
         option.tty_device = argv[optind++];
 
diff --git a/src/tty.c b/src/tty.c
index f041482..43d5796 100644
--- a/src/tty.c
+++ b/src/tty.c
@@ -152,11 +152,11 @@ ssize_t tty_write(int fd, const void *buffer, size_t count)
         // Write byte by byte with output delay
         for (size_t i=0; i<count; i++)
         {
-	    // convert alpha to upper case
-	    if ( option.upcase )
-	    {
-		*(unsigned char*)buffer = toupper(*(unsigned char*)buffer);
-	    }
+            // convert alpha to upper case
+            if ( option.upcase )
+            {
+                *(unsigned char*)buffer = toupper(*(unsigned char*)buffer);
+            }
             ssize_t retval = write(fd, buffer, 1);
             if (retval < 0)
             {
@@ -165,15 +165,15 @@ ssize_t tty_write(int fd, const void *buffer, size_t count)
                 break;
             }
             bytes_written += retval;
-	    if ( option.eol_delay && *(unsigned char*)buffer == '\r' )
-	    {
-		delay( option.eol_delay );
-	    }
+            if ( option.eol_delay && *(unsigned char*)buffer == '\r' )
+            {
+                delay( option.eol_delay );
+            }
             fsync(fd);
-	    if ( option.output_delay )
-	    {
-		delay(option.output_delay);
-	    }
+            if ( option.output_delay )
+            {
+                delay(option.output_delay);
+            }
         }
     }
     else
@@ -184,14 +184,14 @@ ssize_t tty_write(int fd, const void *buffer, size_t count)
             tty_flush(fd);
         }
 
-	// convert lower case to upper case, in situ
-	if ( option.upcase )
-	{
-	    for ( size_t i = 0; i<count; i++ )
-	    {
-		*((unsigned char*)buffer+i) = toupper(*((unsigned char*)buffer+i));
-	    }
-	}
+        // convert lower case to upper case, in situ
+        if ( option.upcase )
+        {
+            for ( size_t i = 0; i<count; i++ )
+            {
+                *((unsigned char*)buffer+i) = toupper(*((unsigned char*)buffer+i));
+            }
+        }
         // Copy bytes to tty write buffer
         memcpy(tty_buffer_write_ptr, buffer, count);
         tty_buffer_write_ptr += count;
@@ -287,7 +287,7 @@ void handle_command_sequence(char input_char, char previous_char, char *output_c
                 tio_printf(" ctrl-t s   Show statistics");
                 tio_printf(" ctrl-t t   Send ctrl-t key code");
                 tio_printf(" ctrl-t T   Toggle line timestamp mode");
-		tio_printf(" ctrl-t U   Toggle upcase");
+                tio_printf(" ctrl-t U   Toggle upcase");
                 tio_printf(" ctrl-t v   Show version");
                 break;
 
@@ -397,16 +397,16 @@ void handle_command_sequence(char input_char, char previous_char, char *output_c
                 }
                 break;
 
-	    case KEY_U:
-		if ( option.upcase == true )
-		{
-		    option.upcase = false;
-		}
-		else
-		{
-		    option.upcase = true;
-		}
-		break;
+            case KEY_U:
+                if ( option.upcase == true )
+                {
+                    option.upcase = false;
+                }
+                else
+                {
+                    option.upcase = true;
+                }
+                break;
 
             case KEY_V:
                 tio_printf("tio v%s", VERSION);
@@ -631,9 +631,9 @@ void tty_configure(void)
     }
     else if ( strcmp("mark", option.parity) == 0)
     {
-	tio.c_cflag &= ~PARENB;
-	tio.c_cflag |= PARODD;
-	tio.c_cflag |= CMSPAR;
+        tio.c_cflag &= ~PARENB;
+        tio.c_cflag |= PARODD;
+        tio.c_cflag |= CMSPAR;
     }
     else
     {
diff --git a/token.txt b/token.txt
deleted file mode 100644
index 4aafd2e..0000000
--- a/token.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-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
-