diff --git a/src/game/menu/menu_typing_practice.js b/src/game/menu/menu_typing_practice.js
index 09b3ff1..ddf3507 100644
--- a/src/game/menu/menu_typing_practice.js
+++ b/src/game/menu/menu_typing_practice.js
@@ -1,12 +1,13 @@
 var MenuTypingPractice = {
-	preload() {
+
+	preload: function() {
 		game.load.image('icon_fullscreen', '../../../resources/image/icon/fullscreen_white.png');
 		game.load.image('space_invaders', '../../../resources/image/icon/space_invaders.png');
 
 		Animal.loadResources();
 	},
 
-	create() {
+	create: function() {
 		game.stage.backgroundColor = '#4d4d4d';
 
 		// typing app area
diff --git a/src/game/menu/menu_typing_test.js b/src/game/menu/menu_typing_test.js
index f1f090a..245dc7d 100644
--- a/src/game/menu/menu_typing_test.js
+++ b/src/game/menu/menu_typing_test.js
@@ -1,12 +1,13 @@
 var MenuTypingTest = {
-	preload() {
+
+	preload: function() {
 		game.load.image('icon_fullscreen', '../../../resources/image/icon/fullscreen_white.png');
 		game.load.image('space_invaders', '../../../resources/image/icon/space_invaders.png');
 
 		Animal.loadResources();
 	},
 
-	create() {
+	create: function() {
 		game.stage.backgroundColor = '#4d4d4d';
 
 		// typing app area