diff --git a/src/commands/update-box-brush-all-face-uvs-command.ts b/src/commands/update-box-brush-all-face-uvs-command.ts
index c1e9b385..f1bd5d7a 100644
--- a/src/commands/update-box-brush-all-face-uvs-command.ts
+++ b/src/commands/update-box-brush-all-face-uvs-command.ts
@@ -40,7 +40,7 @@ export function createUpdateBoxBrushAllFaceUvsCommand(
         previousUvStates = Object.fromEntries(
           getBrushFaceIds(currentBrush).map((faceId) => [
             faceId,
-            cloneFaceUvState(currentBrush.faces[faceId]?.uv)
+            cloneFaceUvState(currentBrush.faces[faceId].uv)
           ])
         );
       }