diff --git a/lua/CopilotChat/select.lua b/lua/CopilotChat/select.lua
index 5ba7a08e..7d42df7b 100644
--- a/lua/CopilotChat/select.lua
+++ b/lua/CopilotChat/select.lua
@@ -167,6 +167,7 @@ function M.gitdiff(source, staged)
   if not dir or dir == '' then
     return nil
   end
+  dir = dir:gsub('.git$', '')
 
   local cmd = 'git -C ' .. dir .. ' diff --no-color --no-ext-diff' .. (staged and ' --staged' or '')
   local handle = io.popen(cmd)