diff --git a/apps/spreadsheeteditor/mobile/app/controller/add/AddFunction.js b/apps/spreadsheeteditor/mobile/app/controller/add/AddFunction.js
index 97dccd5a6..eb584ee89 100644
--- a/apps/spreadsheeteditor/mobile/app/controller/add/AddFunction.js
+++ b/apps/spreadsheeteditor/mobile/app/controller/add/AddFunction.js
@@ -135,8 +135,8 @@ define([
                                 type:       _name,
                                 group:      groupname,
                                 caption:    func.asc_getLocaleName(),
-                                args:       jsonDesc[_name].a || '',
-                                descr:      jsonDesc[_name].d || ''
+                                args:       (jsonDesc && jsonDesc[_name]) ? jsonDesc[_name].a : '',
+                                descr:      (jsonDesc && jsonDesc[_name]) ? jsonDesc[_name].d : ''
                             };
                         }
                     }