diff --git a/src/main/java/info/istlab/ServerTester/JTAConsole.java b/src/main/java/info/istlab/ServerTester/JTAConsole.java
index ad6ce06..d1beefc 100644
--- a/src/main/java/info/istlab/ServerTester/JTAConsole.java
+++ b/src/main/java/info/istlab/ServerTester/JTAConsole.java
@@ -19,17 +19,18 @@
 import java.util.Stack;
 
 import javax.swing.JFrame;
-import javax.swing.JScrollPane;
 import javax.swing.SwingUtilities;
 import javax.swing.text.BadLocationException;
 
+import org.fife.ui.rtextarea.RTextScrollPane;
+
 public class JTAConsole extends MyRSJTextArea
         implements Runnable, WindowListener, KeyListener, MouseListener {
     // static JTAConsole lastWindow;
     // static Point lastActivePoint;
     static Stack<JTAConsole> winStack = new Stack<JTAConsole>();
     JFrame frame;
-    JScrollPane scrollpane;
+    RTextScrollPane scrollpane;
     Process process;
     Thread thread;
     InputStream instream;
@@ -46,7 +47,7 @@
 
     public JTAConsole(String title, int win_height) {
         frame = new JFrame(title);
-        frame.getContentPane().add(scrollpane = new JScrollPane(this));
+        frame.getContentPane().add(scrollpane = new RTextScrollPane(this));
         frame.setSize(500, win_height);
         frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
         frame.addWindowListener(this);
@@ -155,23 +156,18 @@
 
     @Override
     public void windowClosing(WindowEvent e) {
-        setText("");
         destroyProcess();
-        scrollpane.removeAll();
-        frame.getContentPane().removeAll();
 
         winStack.remove(this);
-        if (!process.isAlive()) {
-            // Launcher.allProcs.remove(process);
-        }
-        SwingUtilities.invokeLater(() -> {
-            // frame.setVisible(false); // 表示を遅らせないと、RSJTextAreaでエラーが出る
-            frame.dispose();
-        });
+        // if (!process.isAlive()) {
+        //     // Launcher.allProcs.remove(process);
+        // }
+        frame.setVisible(false);
     }
 
     @Override
     public void windowClosed(WindowEvent e) {
+        frame.dispose();
     }
 
     @Override