diff --git a/charon_vna/gui.py b/charon_vna/gui.py
index 48fba13..3e450ad 100644
--- a/charon_vna/gui.py
+++ b/charon_vna/gui.py
@@ -274,7 +274,7 @@ def main() -> None:
                 "Pluto IP Address",
                 "Enter Pluto IP Address",
                 QLineEdit.Normal,
-                "192.168.2.1",
+                Charon.DEFAULT_IP,
             )
             match = re.match(r"(\d{1,3}\.){3}\d{1,3}", text)
             if not match: