diff --git a/kfet/static/kfet/js/history.js b/kfet/static/kfet/js/history.js
index d3bd6308..d161e081 100644
--- a/kfet/static/kfet/js/history.js
+++ b/kfet/static/kfet/js/history.js
@@ -48,8 +48,7 @@ class KHistory {
     fetch(api_options) {
         this.data.clear();
 
-        if (api_options)
-            this.api_options = api_options;
+        $.extend(this.api_options, api_options);
 
         this.data.fromAPI(this.api_options)
             .done( () => this.display_data() );