diff --git a/files-reg.c b/files-reg.c
index d7251ec30..2a6269b2a 100644
--- a/files-reg.c
+++ b/files-reg.c
@@ -340,7 +340,7 @@ static int dump_ghost_file(int _fd, u32 id, const struct stat *st, dev_t phys_de
 	pr_info("Dumping ghost file contents (id %#x)\n", id);
 
 	img = open_image(CR_FD_GHOST_FILE, O_DUMP, id);
-	if (img < 0)
+	if (!img)
 		return -1;
 
 	gfe.uid = userns_uid(st->st_uid);
diff --git a/mount.c b/mount.c
index a78a48326..6dc48ebcd 100644
--- a/mount.c
+++ b/mount.c
@@ -2199,7 +2199,7 @@ static int collect_mnt_from_image(struct mount_info **pms, struct ns_id *nsid)
 	char root[PATH_MAX] = ".";
 
 	img = open_image(CR_FD_MNTS, O_RSTR, nsid->id);
-	if (img < 0)
+	if (!img)
 		return -1;
 
 	if (nsid->id != root_item->ids->mnt_ns_id)