diff --git a/src/interface.py b/src/interface.py
index f17def1..ec978fc 100644
--- a/src/interface.py
+++ b/src/interface.py
@@ -1,4 +1,4 @@
-from tkinter import Tk, VERTICAL, LEFT, RIGHT, Y, BOTH
+from tkinter import Tk, Canvas, Scrollbar VERTICAL, LEFT, RIGHT, Y, BOTH
 from tkinter import ttk
 
 from instance import Instance, gen_function_for_instance
@@ -12,8 +12,8 @@ def start_ui(instances: [Instance], settings):
     if MainSettings.Sort == SortType.ALPHA:
         instances = list(sorted(instances))
 
-    canvas = ttk.Canvas(root)
-    scrollbar = ttk.Scrollbar(root, orient=VERTICAL, command=canvas.yview)
+    canvas = Canvas(root)
+    scrollbar = Scrollbar(root, orient=VERTICAL, command=canvas.yview)
     frame = ttk.Frame(canvas)
 
     frame.bind(