diff --git a/src/viewport-three/viewport-host.ts b/src/viewport-three/viewport-host.ts
index 0432404d..ccac1fdd 100644
--- a/src/viewport-three/viewport-host.ts
+++ b/src/viewport-three/viewport-host.ts
@@ -796,6 +796,8 @@ export class ViewportHost {
   private viewMode: ViewportViewMode = "perspective";
   private displayMode: ViewportDisplayMode = "normal";
   private panelId: ViewportPanelId = "topLeft";
+  private targetPerspectiveCameraRadius: number | null = null;
+  private targetOrthographicCameraZoom: number | null = null;
   private creationPreview: CreationViewportToolPreview | null = null;
   private currentTerrainBrushState: ArmedTerrainBrushState | null = null;
   private terrainBrushHover: TerrainBrushHit | null = null;