diff --git a/lua/avante/file_selector.lua b/lua/avante/file_selector.lua
index 2493cb6..58c20a1 100644
--- a/lua/avante/file_selector.lua
+++ b/lua/avante/file_selector.lua
@@ -33,6 +33,8 @@ function FileSelector:reset()
 end
 
 function FileSelector:add_selected_file(filepath)
+  if not filepath or filepath == "" then return end
+
   local uniform_path = Utils.uniform_path(filepath)
   -- Avoid duplicates
   if not vim.tbl_contains(self.selected_filepaths, uniform_path) then
diff --git a/lua/avante/llm.lua b/lua/avante/llm.lua
index a7dbfaf..a08aba4 100644
--- a/lua/avante/llm.lua
+++ b/lua/avante/llm.lua
@@ -70,8 +70,10 @@ M.generate_prompts = function(opts)
     if diagnostics ~= "" then table.insert(messages, { role = "user", content = diagnostics }) end
   end
 
-  local code_context = Path.prompts.render_file("_context.avanterules", template_opts)
-  if code_context ~= "" then table.insert(messages, { role = "user", content = code_context }) end
+  if #opts.selected_files > 0 or opts.selected_code ~= nil then
+    local code_context = Path.prompts.render_file("_context.avanterules", template_opts)
+    if code_context ~= "" then table.insert(messages, { role = "user", content = code_context }) end
+  end
 
   if opts.use_xml_format then
     table.insert(messages, { role = "user", content = string.format("<question>%s</question>", instructions) })