diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
index 68c223853..2bed442a5 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
@@ -31,16 +31,12 @@ import javafx.scene.text.TextFlow;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.ui.FXUtils;
 import org.jackhuang.hmcl.ui.SVG;
-import org.jackhuang.hmcl.util.Lang;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.Locale;
-import java.util.Timer;
-import java.util.TimerTask;
 
 import static org.jackhuang.hmcl.ui.FXUtils.onEscPressed;
-import static org.jackhuang.hmcl.ui.FXUtils.runInFX;
 import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
 
 public final class MessageDialogPane extends HBox {
@@ -219,36 +215,6 @@ public final class MessageDialogPane extends HBox {
             return this;
         }
 
-        public Builder cancelOnTimeout(long timeoutMs) {
-            if (dialog.getCancelButton() == null) {
-                throw new IllegalStateException("Call ok/yesOrNo/actionOrCancel before calling cancelOnTimeout");
-            }
-
-            ButtonBase cancelButton = dialog.getCancelButton();
-            String originalText = cancelButton.getText();
-
-            Timer timer = Lang.getTimer();
-            timer.scheduleAtFixedRate(new TimerTask() {
-                long timeout = timeoutMs;
-
-                @Override
-                public void run() {
-                    if (timeout <= 0) {
-                        cancel();
-                        runInFX(() -> {
-                            cancelButton.fire();
-                        });
-                        return;
-                    }
-                    timeout -= 1000;
-                    long currentTimeout = timeout;
-                    runInFX(() -> cancelButton.setText(originalText + " (" + (currentTimeout / 1000) + ")"));
-                }
-            }, 1000, 1000);
-
-            return this;
-        }
-
         public MessageDialogPane build() {
             return dialog;
         }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Lang.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Lang.java
index 5322e5b75..f55008ca1 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Lang.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Lang.java
@@ -419,26 +419,6 @@ public final class Lang {
             action.accept(it1.next(), it2.next());
     }
 
-    private static Timer timer;
-
-    public static synchronized Timer getTimer() {
-        if (timer == null) {
-            timer = new Timer(true);
-        }
-        return timer;
-    }
-
-    public static synchronized TimerTask setTimeout(Runnable runnable, long delayMs) {
-        TimerTask task = new TimerTask() {
-            @Override
-            public void run() {
-                runnable.run();
-            }
-        };
-        getTimer().schedule(task, delayMs);
-        return task;
-    }
-
     public static Throwable resolveException(Throwable e) {
         if (e instanceof ExecutionException || e instanceof CompletionException)
             return resolveException(e.getCause());