diff --git a/apps/common/main/lib/component/DataView.js b/apps/common/main/lib/component/DataView.js
index aa1aa2dbc..86c884f08 100644
--- a/apps/common/main/lib/component/DataView.js
+++ b/apps/common/main/lib/component/DataView.js
@@ -1442,7 +1442,7 @@ define([
                 var models = group.groupStore.models;
                 if (index > 0) {
                     for (var i = 0; i < models.length; i++) {
-                        models.at(i).set({groupName: group.groupName})
+                        models[i].set({groupName: group.groupName});
                     }
                 }
                 store.add(models);
diff --git a/apps/documenteditor/main/app/controller/PageThumbnails.js b/apps/documenteditor/main/app/controller/PageThumbnails.js
index c526fd8a7..f8702d131 100644
--- a/apps/documenteditor/main/app/controller/PageThumbnails.js
+++ b/apps/documenteditor/main/app/controller/PageThumbnails.js
@@ -112,7 +112,7 @@ define([
         },
 
         updateSize: function (size) {
-            this.thumbnailsSize = size * 100;
+            this.thumbnailsSize = Math.min(size * 100, 100);
         },
 
         onChangeSize: function(field, newValue) {