diff --git a/skeletons/IA5String.c b/skeletons/IA5String.c
index 02ecd3e..0fdc074 100644
--- a/skeletons/IA5String.c
+++ b/skeletons/IA5String.c
@@ -8,7 +8,7 @@
 /*
  * IA5String basic type description.
  */
-static ber_tlv_tag_t asn_DEF_IA5String_tags[] = {
+static const ber_tlv_tag_t asn_DEF_IA5String_tags[] = {
 	(ASN_TAG_CLASS_UNIVERSAL | (22 << 2)),	/* [UNIVERSAL 22] IMPLICIT ...*/
 	(ASN_TAG_CLASS_UNIVERSAL | (4 << 2))	/* ... OCTET STRING */
 };