diff --git a/src/gui.py b/src/gui.py
index 3e87afc..ee2e060 100644
--- a/src/gui.py
+++ b/src/gui.py
@@ -101,8 +101,9 @@ class GUI:
         self.parent.config(menu=menu_bar)
 
         # Menu "Style"
-        file_menu = Menu(menu_bar)
-        self.style_menu = Menu(file_menu)
+        file_menu = Menu(menu_bar, tearoff=0)
+        file_menu.add_separator()
+        self.style_menu = Menu(file_menu, tearoff=0)
         self._add_styles_menu_bar(start)
         file_menu.add_cascade(label="Selection style", menu=self.style_menu)