diff --git a/frontend/src/app/main/ui/viewer.cljs b/frontend/src/app/main/ui/viewer.cljs
index ad8e0f594a..f44bc7d175 100644
--- a/frontend/src/app/main/ui/viewer.cljs
+++ b/frontend/src/app/main/ui/viewer.cljs
@@ -295,7 +295,8 @@
 
         size
         (mf/with-memo [frame zoom]
-          (calculate-size (:objects page) frame zoom))
+          (when frame
+            (calculate-size (:objects page) frame zoom)))
 
         orig-size
         (mf/with-memo [orig-frame zoom]