diff --git a/scripts/Data_Settings_Classes.rb b/scripts/Data_Settings_Classes.rb
index 39f359c..d6909d9 100644
--- a/scripts/Data_Settings_Classes.rb
+++ b/scripts/Data_Settings_Classes.rb
@@ -679,6 +679,8 @@ class Window_Settings
         if key && (!Input.press?(Input::ACTION) || @accept_action)
           if key != Input::key_from_name("Backspace")
             Settings[@parameter][@selection] = KeyBind.key(key)
+          else
+            Settings[@parameter][@selection] = nil
           end
           @waiting_for_key = @settings_content.waiting_for_key = false
           apply
diff --git a/scripts/Window_Settings.rb b/scripts/Window_Settings.rb
index f34aa20..c7db8dc 100644
--- a/scripts/Window_Settings.rb
+++ b/scripts/Window_Settings.rb
@@ -182,7 +182,6 @@ class Window_Settings
 
     # parameter setting
     current_parameter = @content.get_current_parameter
-    old_val = current_parameter&.value
     if Input.trigger?(Input::LEFT) || (Input.press?(Input::LEFT) && (@left_hold_timer >= 15))
       @left_hold_timer -= 2
       @content.parameter_left