diff --git a/src/modules/MouseUtils/MouseJumpUI/Helpers/SettingsHelper.cs b/src/modules/MouseUtils/MouseJumpUI/Helpers/SettingsHelper.cs
index c2602ad7002c..08394ba3defd 100644
--- a/src/modules/MouseUtils/MouseJumpUI/Helpers/SettingsHelper.cs
+++ b/src/modules/MouseUtils/MouseJumpUI/Helpers/SettingsHelper.cs
@@ -12,7 +12,7 @@
 
 namespace MouseJumpUI.Helpers;
 
-internal class SettingsHelper
+internal sealed class SettingsHelper
 {
     public SettingsHelper()
     {
diff --git a/src/modules/MouseUtils/MouseJumpUI/MainForm.Designer.cs b/src/modules/MouseUtils/MouseJumpUI/MainForm.Designer.cs
index 6300590e732c..efc431066584 100644
--- a/src/modules/MouseUtils/MouseJumpUI/MainForm.Designer.cs
+++ b/src/modules/MouseUtils/MouseJumpUI/MainForm.Designer.cs
@@ -6,7 +6,7 @@
 
 namespace MouseJumpUI;
 
-partial class MainForm
+internal sealed partial class MainForm
 {
 
     /// <summary>
diff --git a/src/modules/MouseUtils/MouseJumpUI/MainForm.cs b/src/modules/MouseUtils/MouseJumpUI/MainForm.cs
index e0c8050beab0..50e7bb9006f6 100644
--- a/src/modules/MouseUtils/MouseJumpUI/MainForm.cs
+++ b/src/modules/MouseUtils/MouseJumpUI/MainForm.cs
@@ -16,7 +16,7 @@
 
 namespace MouseJumpUI;
 
-internal partial class MainForm : Form
+internal sealed partial class MainForm : Form
 {
     public MainForm(SettingsHelper settingsHelper)
     {