diff --git a/lib/hdb/hdb.asn1 b/lib/hdb/hdb.asn1
index 49318c811..c0d837320 100644
--- a/lib/hdb/hdb.asn1
+++ b/lib/hdb/hdb.asn1
@@ -233,8 +233,8 @@ HDB_entry ::= SEQUENCE {
 	valid-start[5]	KerberosTime OPTIONAL,
 	valid-end[6]	KerberosTime OPTIONAL,
 	pw-end[7]	KerberosTime OPTIONAL,
-	max-life[8]	INTEGER (0..4294967295) OPTIONAL,
-	max-renew[9]	INTEGER (0..4294967295) OPTIONAL,
+	max-life[8]	INTEGER (-2147483648..2147483647) OPTIONAL,
+	max-renew[9]	INTEGER (-2147483648..2147483647) OPTIONAL,
 	flags[10]	HDBFlags,
 	etypes[11]	HDB-EncTypeList OPTIONAL,
 	generation[12]	GENERATION OPTIONAL,