diff --git a/tests/test_main.py b/tests/test_main.py
index 481fa987f..1dc4d298d 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -1,5 +1,6 @@
 import os
 import tempfile
+import subprocess
 from unittest import TestCase
 from unittest.mock import patch
 from aider.main import main
@@ -79,3 +80,10 @@ class TestMain(TestCase):
                 main(["--dirty-commits"])
                 _, kwargs = MockCoder.call_args
                 assert kwargs["dirty_commits"] is True
+
+    def test_main_with_ctags_mocked_failure(self):
+        with patch("subprocess.run", side_effect=subprocess.CalledProcessError(1, "ctags")):
+            with patch("aider.main.Coder") as MockCoder:
+                main(["--ctags"])
+                _, kwargs = MockCoder.call_args
+                assert kwargs["use_ctags"] is False