diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index a9ba77ce..970edb57 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1106,7 +1106,7 @@ sub print_drive_full {
 	}
     }
 
-    $opts .= ",cache=none" if !$drive->{cache};
+    $opts .= ",cache=none" if !$drive->{cache} && !drive_is_cdrom($drive);
 
     my $pathinfo = $path ? "file=$path," : '';