diff --git a/src/shared/discover-image.c b/src/shared/discover-image.c
index 82e0ad4c027..82be0b73d8a 100644
--- a/src/shared/discover-image.c
+++ b/src/shared/discover-image.c
@@ -356,6 +356,7 @@ static int image_make(
 
         read_only =
                 (path && path_startswith(path, "/usr")) ||
+                (parent && path_startswith(parent, "/usr")) ||
                 (faccessat(dfd, filename, W_OK, AT_EACCESS) < 0 && errno == EROFS);
 
         if (S_ISDIR(st->st_mode)) {