diff --git a/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/common/BetterTreeView.cs b/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/common/BetterTreeView.cs
index db8112351..d499ef26e 100644
--- a/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/common/BetterTreeView.cs
+++ b/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/common/BetterTreeView.cs
@@ -25,7 +25,7 @@ public static void ForEach<T, S>(TreeNodeCollection collection,
   public static T GetBetterFrom<T, S>(TreeNode node)
       where T : IBetterTreeNode<S>
       where S : class
-    => (T) node.Tag;
+    => (T) node.Tag!;
 }
 
 public interface IBetterTreeView<T> where T : class {
diff --git a/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/right_panel/textures/TexturePanel.cs b/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/right_panel/textures/TexturePanel.cs
index f9ad7ab98..0a2a05a57 100644
--- a/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/right_panel/textures/TexturePanel.cs
+++ b/FinModelUtility/UniversalAssetTool/UniversalAssetTool.Ui/src/winforms/right_panel/textures/TexturePanel.cs
@@ -3,6 +3,7 @@
 using System.Windows.Forms;
 
 using fin.model;
+using fin.util.asserts;
 
 using uni.ui.winforms.common;
 
@@ -32,5 +33,5 @@ public IReadOnlyTexture? Texture {
     }
 
   private void CopyImageToClipboard_()
-    => Clipboard.SetImage(this.pictureBox_.Image);
+    => Clipboard.SetImage(this.pictureBox_.Image.AssertNonnull());
 }
\ No newline at end of file