diff --git a/frontend/src/App/AppUpdatedModalContent.js b/frontend/src/App/AppUpdatedModalContent.js
index c7f32d9df..90c558270 100644
--- a/frontend/src/App/AppUpdatedModalContent.js
+++ b/frontend/src/App/AppUpdatedModalContent.js
@@ -21,7 +21,7 @@ function mergeUpdates(items, version, prevVersion) {
 
   if (installedPreviouslyIndex === -1) {
     installedPreviouslyIndex = items.length;
-  } else if (installedPreviouslyIndex === installedIndex && items.size()) {
+  } else if (installedPreviouslyIndex === installedIndex && items.length) {
     installedPreviouslyIndex += 1;
   }