diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/account/AddAccountPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/account/AddAccountPane.java
index b1a9daf70..7aab8b9e4 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/account/AddAccountPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/account/AddAccountPane.java
@@ -20,6 +20,7 @@ package org.jackhuang.hmcl.ui.account;
 import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.*;
 
+import javafx.beans.InvalidationListener;
 import javafx.beans.binding.Bindings;
 import javafx.beans.property.ReadOnlyObjectProperty;
 import javafx.fxml.FXML;
@@ -90,6 +91,9 @@ public class AddAccountPane extends StackPane {
         cboType.setConverter(stringConverter(Accounts::getAccountTypeName));
         cboType.getSelectionModel().select(0);
 
+        cboServers.getItems().addListener(onInvalidating(this::checkIfNoServer));
+        checkIfNoServer();
+
         ReadOnlyObjectProperty<AccountFactory<?>> loginType = cboType.getSelectionModel().selectedItemProperty();
 
         txtPassword.visibleProperty().bind(loginType.isNotEqualTo(Accounts.FACTORY_OFFLINE));
@@ -122,6 +126,13 @@ public class AddAccountPane extends StackPane {
         }
     }
 
+    private void checkIfNoServer() {
+        if (cboServers.getItems().isEmpty())
+            cboServers.getStyleClass().setAll("jfx-combo-box-warning");
+        else
+            cboServers.getStyleClass().setAll("jfx-combo-box");
+    }
+
     /**
      * Gets the additional data that needs to be passed into {@link AccountFactory#create(CharacterSelector, String, String, Object)}.
      */
diff --git a/HMCL/src/main/resources/assets/css/root.css b/HMCL/src/main/resources/assets/css/root.css
index 94fe55876..57e7fde41 100644
--- a/HMCL/src/main/resources/assets/css/root.css
+++ b/HMCL/src/main/resources/assets/css/root.css
@@ -1007,6 +1007,15 @@
     -jfx-focus-color: -fx-base-check-color;
 }
 
+.jfx-combo-box-warning {
+    -jfx-focus-color: #D34336;
+    -jfx-unfocus-color: #D34336;
+}
+
+.jfx-combo-box-warning .text {
+    -fx-fill: #D34336;
+}
+
 .combo-box-popup .list-view .jfx-list-cell .label,
 .combo-box-popup .list-view .jfx-list-cell:filled:hover .label {
     -fx-text-fill: BLACK;