diff --git a/scenes/GUI/GUI.gd b/scenes/GUI/GUI.gd
index 6de5702..220b5d9 100644
--- a/scenes/GUI/GUI.gd
+++ b/scenes/GUI/GUI.gd
@@ -41,11 +41,11 @@ func _input(event):
                 play()
     # ----------------------------------
     # Capturing/Freeing the cursor
-#    if Input.is_action_just_pressed("ui_free_cursor"):
-#        if Input.get_mouse_mode() == Input.MOUSE_MODE_VISIBLE:
-#            Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
-#        else:
-#            Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
+    if Input.is_action_just_pressed("ui_free_cursor") and event is InputEventKey:
+        if Input.get_mouse_mode() == Input.MOUSE_MODE_VISIBLE:
+            Input.set_mouse_mode(Input.MOUSE_MODE_CAPTURED)
+        else:
+            Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
     # ----------------------------------
     
     # Si on est en mode "deplacement", on desative le focus sur l'interface 
diff --git a/scenes/GUI/GUI.tscn b/scenes/GUI/GUI.tscn
index a4c6885..ef7b0b3 100644
--- a/scenes/GUI/GUI.tscn
+++ b/scenes/GUI/GUI.tscn
@@ -19,7 +19,7 @@ _sections_unfolded = [ "Font", "Settings" ]
 
 default_font = SubResource( 1 )
 
-[node name="GUI" type="MarginContainer"]
+[node name="GUI" type="MarginContainer" index="0"]
 
 anchor_left = 0.0
 anchor_top = 0.0
diff --git a/scenes/GUI/Settings/Settings.gd b/scenes/GUI/Settings/Settings.gd
index 9974fa2..03fdb3e 100644
--- a/scenes/GUI/Settings/Settings.gd
+++ b/scenes/GUI/Settings/Settings.gd
@@ -23,7 +23,8 @@ func load_settings():
     if err:
         print("Error code when loading config file: ", err)
         
-    $Menus.get_theme().default_font.size = config_file.get_value( "theme", "font_size" )
+    if $Menus.get_theme() and config_file.get_value( "theme", "font_size" ):
+        $Menus.get_theme().default_font.size = config_file.get_value( "theme", "font_size" )
     $Menus/TabContainer/Test/ScrollContainer/VBoxContainer/font_size_bar.value = config_file.get_value( "theme", "font_size" )
     $Menus/TabContainer/Test/ScrollContainer/VBoxContainer/font_size/font_size_value.text = str( $Menus/TabContainer/Test/ScrollContainer/VBoxContainer/font_size_bar.value )