diff --git a/game/sprites.py b/game/sprites.py
index 610037e..2e9d05e 100644
--- a/game/sprites.py
+++ b/game/sprites.py
@@ -27,16 +27,15 @@ class Shape():
             tile.visible = False
 
         for offset_col, offset_row in SHAPES[self.shape_type]:
-            x = self.x + (offset_col * (CELL_SIZE + OUTLINE_WIDTH))
-            y = self.y + (offset_row * (CELL_SIZE + OUTLINE_WIDTH))
+            tile_x = self.x + (offset_col * (CELL_SIZE + OUTLINE_WIDTH))
+            tile_y = self.y + (offset_row * (CELL_SIZE + OUTLINE_WIDTH))
 
             if n < len(self.tiles):
-                self.tiles[n].position = x, y, 0
+                self.tiles[n].position = tile_x, tile_y, 0
                 self.tiles[n].color = color
                 self.tiles[n].visible = True
             else:
-                self.tiles.append(arcade.SpriteSolidColor(width=CELL_SIZE, height=CELL_SIZE,
-                                                         color=color, center_x=x, center_y=y))
+                self.tiles.append(arcade.SpriteSolidColor(width=CELL_SIZE, height=CELL_SIZE, color=color, center_x=tile_x, center_y=tile_y))
                 self.sprite_list.append(self.tiles[-1])
 
             n += 1
@@ -45,6 +44,5 @@ class Shape():
         for offset_col, offset_row in SHAPES[self.shape_type]:
             x = self.x + (offset_col * (CELL_SIZE + OUTLINE_WIDTH))
             y = self.y + (offset_row * (CELL_SIZE + OUTLINE_WIDTH))
-            self.tiles.append(arcade.SpriteSolidColor(width=CELL_SIZE, height=CELL_SIZE,
-                                                    color=self.shape_color, center_x=x, center_y=y))
+            self.tiles.append(arcade.SpriteSolidColor(width=CELL_SIZE, height=CELL_SIZE, color=self.shape_color, center_x=x, center_y=y))
             self.sprite_list.append(self.tiles[-1])
diff --git a/menus/settings.py b/menus/settings.py
index a36ece9..5071e59 100644
--- a/menus/settings.py
+++ b/menus/settings.py
@@ -160,7 +160,10 @@ class Settings(arcade.gui.UIView):
             if self.settings_dict['vsync']:
                 self.window.set_vsync(True)
                 display_mode = self.window.display.get_default_screen().get_mode()
-                refresh_rate = display_mode.rate
+                if display_mode:
+                    refresh_rate = display_mode.rate
+                else:
+                    refresh_rate = 60
                 self.window.set_update_rate(1 / refresh_rate)
                 self.window.set_draw_rate(1 / refresh_rate)
 
@@ -215,7 +218,6 @@ class Settings(arcade.gui.UIView):
             file.write(json.dumps(self.settings_dict, indent=4))
 
     def update(self, setting=None, button_state=None, setting_type="bool"):
-        setting_dict = settings[self.current_category][setting]
         config_key = settings[self.current_category][setting]["config_key"]
 
         if setting_type == "option":
diff --git a/run.py b/run.py
index 29ec6b0..23f5c54 100644
--- a/run.py
+++ b/run.py
@@ -77,7 +77,10 @@ window = arcade.Window(width=resolution[0], height=resolution[1], title='Shatter
 if vsync:
     window.set_vsync(True)
     display_mode = window.display.get_default_screen().get_mode()
-    refresh_rate = display_mode.rate
+    if display_mode:
+        refresh_rate = display_mode.rate
+    else:
+        refresh_rate = 60
     window.set_update_rate(1 / refresh_rate)
     window.set_draw_rate(1 / refresh_rate)
 elif not fps_limit == 0: