diff --git a/runtime/lua/vim/diagnostic.lua b/runtime/lua/vim/diagnostic.lua
index dbf4f56032..b8ffb26377 100644
--- a/runtime/lua/vim/diagnostic.lua
+++ b/runtime/lua/vim/diagnostic.lua
@@ -867,7 +867,9 @@ local function set_list(loclist, opts)
     })
 
     -- Get the id of the newly created quickfix list.
-    _qf_id = vim.fn.getqflist({ id = 0 }).id
+    if _qf_id == nil then
+      _qf_id = vim.fn.getqflist({ id = 0 }).id
+    end
   end
   if open then
     api.nvim_command(loclist and 'lwindow' or 'botright cwindow')