diff --git a/alacritty_config_gui.py b/alacritty_config_gui.py
index 37bb741..fd2d989 100644
--- a/alacritty_config_gui.py
+++ b/alacritty_config_gui.py
@@ -31,6 +31,8 @@ def delete_layout_items(layout):
 
 
 class ColorSelect(QtWidgets.QPushButton):
+    self._value = None
+
     def __init__(self, value):
         super().__init__()
         if value: