diff --git a/cddl/contrib/opensolaris/common/ctf/ctf_create.c b/cddl/contrib/opensolaris/common/ctf/ctf_create.c
index 41e81e50fd08..679ed18798a7 100644
--- a/cddl/contrib/opensolaris/common/ctf/ctf_create.c
+++ b/cddl/contrib/opensolaris/common/ctf/ctf_create.c
@@ -584,7 +584,7 @@ ctf_discard(ctf_file_t *fp)
 
 	for (dtd = ctf_list_prev(&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) {
 		ntd = ctf_list_prev(dtd);
-		if (dtd->dtd_type <= fp->ctf_dtoldid)
+		if (CTF_TYPE_TO_INDEX(dtd->dtd_type) <= fp->ctf_dtoldid)
 			continue; /* skip types that have been committed */
 
 		ctf_dtd_delete(fp, dtd);
@@ -1328,7 +1328,7 @@ ctf_add_type(ctf_file_t *dst_fp, ctf_file_t *src_fp, ctf_id_t src_type)
 	 */
 	if (dst_type == CTF_ERR && name[0] != '\0') {
 		for (dtd = ctf_list_prev(&dst_fp->ctf_dtdefs); dtd != NULL &&
-		    dtd->dtd_type > dst_fp->ctf_dtoldid;
+		    CTF_TYPE_TO_INDEX(dtd->dtd_type) > dst_fp->ctf_dtoldid;
 		    dtd = ctf_list_prev(dtd)) {
 			if (CTF_INFO_KIND(dtd->dtd_data.ctt_info) == kind &&
 			    dtd->dtd_name != NULL &&