diff --git a/frontend/src/app/main/data/workspace/viewport.cljs b/frontend/src/app/main/data/workspace/viewport.cljs
index 6ab65c6ac..40c2d3689 100644
--- a/frontend/src/app/main/data/workspace/viewport.cljs
+++ b/frontend/src/app/main/data/workspace/viewport.cljs
@@ -35,7 +35,7 @@
                   objects (wsh/lookup-page-objects state page-id)
                   shapes  (cph/get-immediate-children objects)
                   srect   (gsh/selection-rect shapes)
-                  local   (assoc local :vport size :zoom 1)]
+                  local   (assoc local :vport size :zoom 1 :zoom-inverse 1)]
               (cond
                 (or (not (d/num? (:width srect)))
                     (not (d/num? (:height srect))))
@@ -47,6 +47,7 @@
                       zoom  (/ (:width size) (:width srect))]
                   (-> local
                       (assoc :zoom zoom)
+                      (assoc :zoom-inverse (/ 1 zoom))
                       (update :vbox merge srect)))
 
                 :else
diff --git a/frontend/src/app/main/data/workspace/zoom.cljs b/frontend/src/app/main/data/workspace/zoom.cljs
index f8ebe6884..fce940e6f 100644
--- a/frontend/src/app/main/data/workspace/zoom.cljs
+++ b/frontend/src/app/main/data/workspace/zoom.cljs
@@ -83,6 +83,7 @@
                           zoom  (/ (:width vport) (:width srect))]
                       (-> local
                           (assoc :zoom zoom)
+                          (assoc :zoom-inverse (/ 1 zoom))
                           (update :vbox merge srect))))))))))
 
 (def zoom-to-selected-shape
@@ -103,6 +104,7 @@
                             zoom  (/ (:width vport) (:width srect))]
                         (-> local
                             (assoc :zoom zoom)
+                            (assoc :zoom-inverse (/ 1 zoom))
                             (update :vbox merge srect)))))))))))
 
 (defn start-zooming [pt]