diff --git a/lua/fittencode/base.lua b/lua/fittencode/base.lua
index f97e5abd..bd9f36b3 100644
--- a/lua/fittencode/base.lua
+++ b/lua/fittencode/base.lua
@@ -48,10 +48,11 @@ end
 ---@param name string
 ---@param hi table
 function M.set_hi(name, hi)
+  -- Neovim 0.10.0 has been released on 2024-05-16.
   if fn.has('nvim-0.10') == 1 then
     -- https://github.com/neovim/neovim/pull/25229
     -- https://github.com/luozhiya/fittencode.nvim/issues/20
-    -- hi.force = true
+    hi.force = true
   end
   hi.cterm = hi.cterm or {}
   api.nvim_set_hl(0, name, hi)
diff --git a/lua/fittencode/engines/actions.lua b/lua/fittencode/engines/actions.lua
index f2425db9..b96647f1 100644
--- a/lua/fittencode/engines/actions.lua
+++ b/lua/fittencode/engines/actions.lua
@@ -214,19 +214,21 @@ end
 ---@field start integer[]
 ---@field end integer[]
 ---@field vmode boolean
----@field region string[]
+---@field region? string[]
 
 local VMODE = { ['v'] = true, ['V'] = true, [api.nvim_replace_termcodes('<C-V>', true, true, true)] = true }
 
 local function make_range(buffer)
   local in_v = false
-  local region = {}
+  local region = nil
 
   local mode = api.nvim_get_mode().mode
   Log.debug('Action mode: {}', mode)
   if VMODE[mode] then
     in_v = true
-    region = fn.getregion(vim.fn.getpos('.'), vim.fn.getpos('v'), { type = vim.fn.mode() })
+    if fn.has('nvim-0.10') == 1 then
+      region = fn.getregion(vim.fn.getpos('.'), vim.fn.getpos('v'), { type = vim.fn.mode() })
+    end
   end
 
   api.nvim_feedkeys(api.nvim_replace_termcodes('<ESC>', true, true, true), 'nx', false)
diff --git a/lua/fittencode/prompt_providers/actions.lua b/lua/fittencode/prompt_providers/actions.lua
index 107235f7..d1df8771 100644
--- a/lua/fittencode/prompt_providers/actions.lua
+++ b/lua/fittencode/prompt_providers/actions.lua
@@ -42,7 +42,7 @@ end
 local function get_range_content(buffer, range)
   local lines = {}
   if range.vmode then
-    lines = range.region
+    lines = range.region or {}
   else
     -- lines = api.nvim_buf_get_text(buffer, range.start[1] - 1, 0, range.start[1] - 1, -1, {})
     local end_col = max_len(buffer, range['end'][1], range['end'][2])