diff --git a/src/options.c b/src/options.c
index 25fa579..58cb555 100644
--- a/src/options.c
+++ b/src/options.c
@@ -199,29 +199,29 @@ void options_parse(int argc, char *argv[])
     {
         static struct option long_options[] =
         {
-            {"baudrate",         required_argument, 0, 'b'                  },
-            {"databits",         required_argument, 0, 'd'                  },
-            {"flow",             required_argument, 0, 'f'                  },
-            {"stopbits",         required_argument, 0, 's'                  },
-            {"parity",           required_argument, 0, 'p'                  },
-            {"output-delay",     required_argument, 0, 'o'                  },
-            {"eol-delay",        required_argument, 0, 'O'                  },
-            {"dtr-pulse-duration",   required_argument, 0, OPT_DTR_PULSE_DURATION   },
-            {"no-autoconnect",   no_argument,       0, 'n'                  },
-            {"local-echo",       no_argument,       0, 'e'                  },
-            {"timestamp",        no_argument,       0, 't'                  },
-            {"timestamp-format", required_argument, 0, OPT_TIMESTAMP_FORMAT },
-            {"list-devices",     no_argument,       0, 'L'                  },
-            {"log",              no_argument,       0, 'l'                  },
-            {"log-file",         required_argument, 0, OPT_LOG_FILE         },
-            {"log-strip",        no_argument,       0, OPT_LOG_STRIP        },
-            {"socket",           required_argument, 0, 'S'                  },
-            {"map",              required_argument, 0, 'm'                  },
-            {"color",            required_argument, 0, 'c'                  },
-            {"hexadecimal",      no_argument,       0, 'x'                  },
-            {"version",          no_argument,       0, 'v'                  },
-            {"help",             no_argument,       0, 'h'                  },
-            {0,                  0,                 0,  0                   }
+            {"baudrate",           required_argument, 0, 'b'                   },
+            {"databits",           required_argument, 0, 'd'                   },
+            {"flow",               required_argument, 0, 'f'                   },
+            {"stopbits",           required_argument, 0, 's'                   },
+            {"parity",             required_argument, 0, 'p'                   },
+            {"output-delay",       required_argument, 0, 'o'                   },
+            {"eol-delay",          required_argument, 0, 'O'                   },
+            {"dtr-pulse-duration", required_argument, 0, OPT_DTR_PULSE_DURATION},
+            {"no-autoconnect",     no_argument,       0, 'n'                   },
+            {"local-echo",         no_argument,       0, 'e'                   },
+            {"timestamp",          no_argument,       0, 't'                   },
+            {"timestamp-format",   required_argument, 0, OPT_TIMESTAMP_FORMAT  },
+            {"list-devices",       no_argument,       0, 'L'                   },
+            {"log",                no_argument,       0, 'l'                   },
+            {"log-file",           required_argument, 0, OPT_LOG_FILE          },
+            {"log-strip",          no_argument,       0, OPT_LOG_STRIP         },
+            {"socket",             required_argument, 0, 'S'                   },
+            {"map",                required_argument, 0, 'm'                   },
+            {"color",              required_argument, 0, 'c'                   },
+            {"hexadecimal",        no_argument,       0, 'x'                   },
+            {"version",            no_argument,       0, 'v'                   },
+            {"help",               no_argument,       0, 'h'                   },
+            {0,                    0,                 0,  0                    }
         };
 
         /* getopt_long stores the option index here */