diff --git a/gui/data/resource_variables.py b/gui/data/resource_variables.py
index 9f6cf38..6da8156 100644
--- a/gui/data/resource_variables.py
+++ b/gui/data/resource_variables.py
@@ -10,6 +10,7 @@
     r"""
     Base class for GUI resource related XPATH variables.
     """
+
     xpath_textbox_hostname = "//input[@id='host']"
     xpath_textbox_username = "//input[@id='username']"
     xpath_textbox_password = "//input[@id='password']"