diff --git a/overlay.d/05core/usr/lib/dracut/modules.d/20live/live-generator b/overlay.d/05core/usr/lib/dracut/modules.d/20live/live-generator
index 90ac7418ce..5ab8b5529c 100755
--- a/overlay.d/05core/usr/lib/dracut/modules.d/20live/live-generator
+++ b/overlay.d/05core/usr/lib/dracut/modules.d/20live/live-generator
@@ -90,6 +90,7 @@ Requires=${isosrc_escaped}
 [Mount]
 What=/${isosrc}
 Where=/run/media/iso
+Options=ro
 Type=iso9660
 EOF