diff --git a/src/main/java/JumpGame.java b/src/main/java/JumpGame.java
index bfbf201..4a7b5ca 100644
--- a/src/main/java/JumpGame.java
+++ b/src/main/java/JumpGame.java
@@ -1,16 +1,12 @@
 import models.IModel;
 import models.JumpGameModel;
-import org.lwjgl.glfw.GLFW;
 import org.lwjgl.glfw.GLFWKeyCallback;
 import views.BackgroundRenderer;
 import views.IView;
 import views.PlayerRenderer;
 import views.TileMapRenderer;
 
-import static org.lwjgl.glfw.Callbacks.glfwFreeCallbacks;
 import static org.lwjgl.glfw.GLFW.*;
-import static org.lwjgl.opengl.GL11.*;
-import static org.lwjgl.system.MemoryUtil.NULL;
 
 import java.util.ArrayList;
 
@@ -26,7 +22,7 @@
     //
     public void gravity(double y) {
         JumpGameModel jumpGameModel = (JumpGameModel) model;
-        jumpGameModel.updateGravity(y); //重力の更新
+        jumpGameModel.gravity(y); //重力の更新
         jumpGameModel.updateGroundFlag();//地面の判定切り替え
     }