diff --git a/bitrix/department.lua b/bitrix/department.lua
index bab6a84..42b1f84 100644
--- a/bitrix/department.lua
+++ b/bitrix/department.lua
@@ -27,15 +27,14 @@ end
 
 -- https://apidocs.bitrix24.ru/api-reference/department/department-getlist.html
 
-function _M.department.getlist(order, filter, select, start)
-    select = select or {'*'}
+function _M.department.getlist(order, filter, sel, start)
+    sel = sel or {'*'}
+    filter = filter or {}    
+    filter['order'] = order
+    filter['select'] = sel
+    filter['start'] = startPos
     return _M.fetchAllPages(function(startPos)
-        return _M.post('department.get', {
-            ['order'] = order,
-            ['filter'] = filter,
-            ['select'] = select,
-            ['start'] = startPos
-        }, true)
+        return _M.post('department.get', filter, true)
     end, start)
 end