diff --git a/gui/data/gui_variables.py b/gui/data/gui_variables.py
index 8d15e39..a4298b6 100644
--- a/gui/data/gui_variables.py
+++ b/gui/data/gui_variables.py
@@ -6,6 +6,10 @@
 
 
 class gui_variables:
+    r"""
+    Base class for GUI related XPATH variables.
+    """
+
     # Login page
     xpath_textbox_hostname = "//input[@id='host']"
     xpath_textbox_username = "//*[@data-test-id='login-input-username']"