diff --git a/tests/domain/scene-document-validation.test.ts b/tests/domain/scene-document-validation.test.ts
index cdee47ab..83bd5f9a 100644
--- a/tests/domain/scene-document-validation.test.ts
+++ b/tests/domain/scene-document-validation.test.ts
@@ -705,6 +705,7 @@ describe("validateSceneDocument", () => {
           interactionAngleDegrees: Number.NaN,
           allowLookInputTargetSwitch: "yes" as unknown as boolean,
           targetButtonCyclesActiveTarget: 1 as unknown as boolean,
+          invertMouseCameraHorizontal: "no" as unknown as boolean,
           movementTemplate: {
             kind: "invalidTemplate",
             moveSpeed: 0,