diff --git a/Source/Editor/Windows/Assets/SkeletonMaskWindow.cs b/Source/Editor/Windows/Assets/SkeletonMaskWindow.cs
index 6246d8f66..a5e3da327 100644
--- a/Source/Editor/Windows/Assets/SkeletonMaskWindow.cs
+++ b/Source/Editor/Windows/Assets/SkeletonMaskWindow.cs
@@ -180,7 +180,7 @@ namespace FlaxEditor.Windows.Assets
                         {
                             SetTreeChecked(node as TreeNode, state);
                         }
-                        else if(node is CheckBox)
+                        if(node is CheckBox)
                         {
                             (node as CheckBox).Checked = state;
                         }