diff --git a/kfet/static/kfet/js/history.js b/kfet/static/kfet/js/history.js
index fbae1226..faf1e0e2 100644
--- a/kfet/static/kfet/js/history.js
+++ b/kfet/static/kfet/js/history.js
@@ -40,7 +40,7 @@ class KHistory {
             templates['opegroup'] = 
                 '<div class="opegroup"><span class="time"></span><span class="amount"></span><span class="valid_by"></span><span class="comment"></span></div>';
 
-        this.display = new ForestDisplay(this._$container, templates);
+        this.display = new ForestDisplay(this._$container, templates, this.data);
  
         this._init_events();
     }
diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index d563a6e0..ae0d9bd1 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -1267,10 +1267,10 @@ class OperationList extends APIModelForest {
 
 class ForestDisplay {
 
-    constructor($container, templates) {
+    constructor($container, templates, data) {
         this._templates = templates ;
         this._$container = $container;
-        this.data = new ModelForest();
+        this.data = data || new ModelForest();
     }
 
 
@@ -1341,15 +1341,10 @@ class ForestDisplay {
 
 
     /**
-     * Updates stored data and displays it in container.
-     * @param {Models.ModelForest} data
+     * Displays stored data in container.
      * @param {Object} [options] Options for element render method
      */
-    render(data, options) {
-        if (data) {
-            this.data = data;
-        }
-
+    render(options) {
         var forest = this.data ;
 
         if (forest.is_empty())
diff --git a/kfet/static/kfet/js/kpsul.js b/kfet/static/kfet/js/kpsul.js
index 9b235972..64a7a64e 100644
--- a/kfet/static/kfet/js/kpsul.js
+++ b/kfet/static/kfet/js/kpsul.js
@@ -434,7 +434,7 @@ class ArticleManager {
             'category': '<div class="category"><span class="name"></span></div>',
             'article' : '<div class="article"><span class="name"></span><span class="price"></span><span class="stock"></span></div>'
         } ;
-        this.display = new ForestDisplay($container, templates);
+        this.display = new ForestDisplay($container, templates, this.data);
         this.autocomplete = new ArticleAutocomplete(this, $container);
 
         this._init_events();