diff --git a/test/jdk/ProblemList.txt b/test/jdk/ProblemList.txt
index 2c63cd43d25..c6e62a55962 100644
--- a/test/jdk/ProblemList.txt
+++ b/test/jdk/ProblemList.txt
@@ -695,10 +695,6 @@ sanity/client/SwingSet/src/ToolTipDemoTest.java 8293001 linux-all
 sanity/client/SwingSet/src/ButtonDemoScreenshotTest.java 8265770 macosx-all
 sanity/client/SwingSet/src/EditorPaneDemoTest.java 8212240 linux-x64
 
-# jdk_swing Ubuntu 23.04 specific
-
-javax/swing/JComboBox/TestComboBoxComponentRendering.java 8309734 linux-all
-
 # This test fails on macOS 14
 javax/swing/plaf/synth/7158712/bug7158712.java 8324782 macosx-all
 
diff --git a/test/jdk/javax/swing/JComboBox/TestComboBoxComponentRendering.java b/test/jdk/javax/swing/JComboBox/TestComboBoxComponentRendering.java
index 0e176a911a3..da914314670 100644
--- a/test/jdk/javax/swing/JComboBox/TestComboBoxComponentRendering.java
+++ b/test/jdk/javax/swing/JComboBox/TestComboBoxComponentRendering.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -33,6 +33,7 @@
 import java.awt.Color;
 import java.awt.Component;
 import java.awt.image.BufferedImage;
+import java.awt.Font;
 import java.awt.Point;
 import java.awt.Rectangle;
 import java.awt.Robot;
@@ -137,6 +138,7 @@ class ComboBoxCustomRenderer extends JLabel
         implements ListCellRenderer {
 
     public ComboBoxCustomRenderer() {
+        setFont(new Font("SansSerif", Font.BOLD, 32));
         setOpaque(true);
         setHorizontalAlignment(CENTER);
         setVerticalAlignment(CENTER);