diff --git a/packages/preview-service/routes/preview.js b/packages/preview-service/routes/preview.js
index 14c927a25..3059351f2 100644
--- a/packages/preview-service/routes/preview.js
+++ b/packages/preview-service/routes/preview.js
@@ -33,7 +33,7 @@ async function pageFunction(objectUrl) {
   for (let i = 0; i < 24; i++) {
     v.setView({ azimuth: Math.PI / 12, polar: 0 }, false)
     await waitForAnimation()
-    ret.scr[i + ''] = v.screenshot()
+    ret.scr[i + ''] = await v.screenshot()
   }
 
   /*
diff --git a/packages/viewer/src/IViewer.ts b/packages/viewer/src/IViewer.ts
index 3ac8438d9..9ad468838 100644
--- a/packages/viewer/src/IViewer.ts
+++ b/packages/viewer/src/IViewer.ts
@@ -115,9 +115,6 @@ export type PolarView = {
   origin?: Vector3
 }
 
-/**
- * Carried over from the old Viewer. To be extended/changed
- */
 export interface IViewer {
   init(): Promise<void>
   resize(): void