diff --git a/src/main/java/istlab/KisoJikken/App.java b/src/main/java/istlab/KisoJikken/App.java
index fd6acb6..6c2f168 100644
--- a/src/main/java/istlab/KisoJikken/App.java
+++ b/src/main/java/istlab/KisoJikken/App.java
@@ -64,8 +64,9 @@
         SwingUtilities.invokeLater(() -> {
             try {
                 String laf = UIManager.getSystemLookAndFeelClassName();
-                System.out.println(laf);
-//                laf = "javax.swing.plaf.metal.MetalLookAndFeel";
+                // System.out.println(laf);
+                // Linuxの場合
+                if (laf.endsWith("GTKLookAndFeel")) laf = "javax.swing.plaf.metal.MetalLookAndFeel";
                 UIManager.setLookAndFeel(laf);
             } catch (Exception e) {
                 /* Never happens */ }