diff --git a/kfet/static/kfet/js/kfet.api.js b/kfet/static/kfet/js/kfet.api.js
index 79893a83..0020b636 100644
--- a/kfet/static/kfet/js/kfet.api.js
+++ b/kfet/static/kfet/js/kfet.api.js
@@ -1619,7 +1619,7 @@ class SpecialOpeFormatter extends OperationFormatter {
     }
 
     static prop_infos2(a) {
-        return SpecialOperation.verbose_types(a.type) || '' ;
+        return SpecialOperation.verbose_types[a.type] || '' ;
     }
 }