diff --git a/aider/main.py b/aider/main.py
index ca5219667..53251f7a0 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -367,7 +367,8 @@ def sanity_check_repo(repo, io):
         io.tool_output("You may be able to convert your repo: git update-index --index-version=2")
         io.tool_output("Or run aider --no-git to proceed without using git.")
         #ai ask if the user wants to open the url!
-        io.tool_output(urls.git_index_version)
+        if io.confirm_ask("Open documentation url for more info?", subject=urls.git_index_version):
+            webbrowser.open(urls.git_index_version)
         return False
 
     io.tool_error("Unable to read git repository, it may be corrupt?")