diff --git a/mount.c b/mount.c
index eb2e9829f..93b3fe3ca 100644
--- a/mount.c
+++ b/mount.c
@@ -1531,6 +1531,8 @@ int mntns_collect_root(pid_t pid)
 	int ret;
 	char path[PATH_MAX + 1];
 
+	close_service_fd(ROOT_FD_OFF);
+
 	if (!(current_ns_mask & CLONE_NEWNS)) {
 		/*
 		 * If criu and tasks we dump live in the same mount