diff --git a/main.py b/main.py
index a9b8509..1433eff 100644
--- a/main.py
+++ b/main.py
@@ -15,6 +15,9 @@ from source.jetsort import JetSortSimulator
 from source.pelican import PelicanSimulator
 from source.selex import SelexSimulator
 
+DEFAULT_BAUDRATE = 115200
+DEFAULT_PORT = "/dev/ttyUSB0"
+
 
 def main():
     parser = argparse.ArgumentParser(
@@ -54,11 +57,15 @@ Examples:
     pelican_parser.add_argument(
         "--port",
         "-p",
-        default="/dev/ttyUSB0",
-        help="Serial port (default: /dev/ttyUSB0)",
+        default=DEFAULT_PORT,
+        help=f"Serial port (default: {DEFAULT_PORT})",
     )
     pelican_parser.add_argument(
-        "--baudrate", "-b", type=int, default=115200, help="Baud rate (default: 115200)"
+        "--baudrate",
+        "-b",
+        type=int,
+        default=DEFAULT_BAUDRATE,
+        help=f"Baud rate (default: {DEFAULT_BAUDRATE})",
     )
 
     # Glory simulator subcommand
@@ -68,11 +75,15 @@ Examples:
     glory_parser.add_argument(
         "--port",
         "-p",
-        default="/dev/ttyUSB0",
-        help="Serial port (default: /dev/ttyUSB0)",
+        default=DEFAULT_PORT,
+        help=f"Serial port (default: {DEFAULT_PORT})",
     )
     glory_parser.add_argument(
-        "--baudrate", "-b", type=int, default=115200, help="Baud rate (default: 115200)"
+        "--baudrate",
+        "-b",
+        type=int,
+        default=DEFAULT_BAUDRATE,
+        help=f"Baud rate (default: {DEFAULT_BAUDRATE})",
     )
 
     # Selex simulator subcommand
@@ -82,11 +93,15 @@ Examples:
     selex_parser.add_argument(
         "--port",
         "-p",
-        default="/dev/ttyUSB0",
-        help="Serial port (default: /dev/ttyUSB0)",
+        default=DEFAULT_PORT,
+        help=f"Serial port (default: {DEFAULT_PORT})",
     )
     selex_parser.add_argument(
-        "--baudrate", "-b", type=int, default=115200, help="Baud rate (default: 115200)"
+        "--baudrate",
+        "-b",
+        type=int,
+        default=DEFAULT_BAUDRATE,
+        help=f"Baud rate (default: {DEFAULT_BAUDRATE})",
     )
 
     # JetSort simulator subcommand
@@ -96,11 +111,15 @@ Examples:
     jetsort_parser.add_argument(
         "--port",
         "-p",
-        default="/dev/ttyUSB0",
-        help="Serial port (default: /dev/ttyUSB0)",
+        default=DEFAULT_PORT,
+        help=f"Serial port (default: {DEFAULT_PORT})",
     )
     jetsort_parser.add_argument(
-        "--baudrate", "-b", type=int, default=115200, help="Baud rate (default: 115200)"
+        "--baudrate",
+        "-b",
+        type=int,
+        default=DEFAULT_BAUDRATE,
+        help=f"Baud rate (default: {DEFAULT_BAUDRATE})",
     )
 
     args = parser.parse_args()