diff --git a/src/XamlMath.Shared/Atoms/CancelAtom.cs b/src/XamlMath.Shared/Atoms/CancelAtom.cs
index 05d17278..c57ade73 100644
--- a/src/XamlMath.Shared/Atoms/CancelAtom.cs
+++ b/src/XamlMath.Shared/Atoms/CancelAtom.cs
@@ -16,7 +16,7 @@ public CancelAtom(SourceSpan atomSource, Atom? contentAtom, StrokeBoxMode stroke
     protected override Box CreateBoxCore(TexEnvironment environment)
     {
         var contentBox = _contentAtom is null ? StrutBox.Empty : _contentAtom.CreateBox(environment);
-        var lineBox = new StrokeBox(_strokeBoxMode)
+        var lineBox = new StrokeBox(environment, _strokeBoxMode)
         {
             Height = contentBox.Height,
             Depth = contentBox.Depth,
diff --git a/src/XamlMath.Shared/Boxes/StrokeBox.cs b/src/XamlMath.Shared/Boxes/StrokeBox.cs
index fe8eb6e9..e2b1025b 100644
--- a/src/XamlMath.Shared/Boxes/StrokeBox.cs
+++ b/src/XamlMath.Shared/Boxes/StrokeBox.cs
@@ -7,7 +7,8 @@ internal sealed class StrokeBox : Box
 {
     private readonly StrokeBoxMode _mode;
 
-    public StrokeBox(StrokeBoxMode mode)
+    public StrokeBox(TexEnvironment environment, StrokeBoxMode mode)
+        : base(environment)
     {
         _mode = mode;
     }