diff --git a/skeletons/GeneralizedTime.c b/skeletons/GeneralizedTime.c
index f864d83..982cca5 100644
--- a/skeletons/GeneralizedTime.c
+++ b/skeletons/GeneralizedTime.c
@@ -147,6 +147,11 @@
 	(ASN_TAG_CLASS_UNIVERSAL | (26 << 2)),  /* [UNIVERSAL 26] IMPLICIT ...*/
 	(ASN_TAG_CLASS_UNIVERSAL | (4 << 2))    /* ... OCTET STRING */
 };
+static asn_per_constraints_t asn_DEF_GeneralizedTime_constraints = {
+	{ APC_CONSTRAINED, 7, 7, 0x20, 0x7e },  /* Value */
+	{ APC_SEMI_CONSTRAINED, -1, -1, 0, 0 }, /* Size */
+	0, 0
+};
 asn_TYPE_descriptor_t asn_DEF_GeneralizedTime = {
 	"GeneralizedTime",
 	"GeneralizedTime",
@@ -157,7 +162,8 @@
 	GeneralizedTime_encode_der,
 	OCTET_STRING_decode_xer_utf8,
 	GeneralizedTime_encode_xer,
-	0, 0,
+	OCTET_STRING_decode_uper,
+	OCTET_STRING_encode_uper,
 	0, /* Use generic outmost tag fetcher */
 	asn_DEF_GeneralizedTime_tags,
 	sizeof(asn_DEF_GeneralizedTime_tags)
@@ -165,7 +171,7 @@
 	asn_DEF_GeneralizedTime_tags,
 	sizeof(asn_DEF_GeneralizedTime_tags)
 	  / sizeof(asn_DEF_GeneralizedTime_tags[0]),
-	0,	/* No PER visible constraints */
+	&asn_DEF_GeneralizedTime_constraints,
 	0, 0,	/* No members */
 	0	/* No specifics */
 };