diff --git a/tests/test_media_utils.py b/tests/test_media_utils.py
index c64d286c5e..72f5bb4f70 100644
--- a/tests/test_media_utils.py
+++ b/tests/test_media_utils.py
@@ -446,6 +446,12 @@ def test_file_uri_to_path_supports_standard_and_legacy_posix_file_uris(tmp_path)
         assert media_utils.file_uri_to_path(legacy_file_uri) == str(media_path)
 
 
+def test_file_uri_to_path_preserves_posix_root_for_container_paths():
+    assert media_utils.file_uri_to_path("file:///AstrBot/data/cache/image.png") == (
+        "/AstrBot/data/cache/image.png"
+    )
+
+
 def test_from_file_system_uses_pathlib_file_uri(tmp_path):
     media_path = tmp_path / "media file.bin"
     media_path.write_bytes(b"media")