add const
diff --git a/skeletons/constr_SET_OF.c b/skeletons/constr_SET_OF.c
index c24a956..3ff8189 100644
--- a/skeletons/constr_SET_OF.c
+++ b/skeletons/constr_SET_OF.c
@@ -66,7 +66,7 @@
* The decoder of the SET OF type.
*/
asn_dec_rval_t
-SET_OF_decode_ber(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+SET_OF_decode_ber(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
void **struct_ptr, const void *ptr, size_t size, int tag_mode) {
/*
* Bring closer parts of structure description.
@@ -466,7 +466,7 @@
* Decode the XER (XML) data.
*/
asn_dec_rval_t
-SET_OF_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+SET_OF_decode_xer(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
void **struct_ptr, const char *opt_mname,
const void *buf_ptr, size_t size) {
/*
@@ -873,7 +873,7 @@
}
asn_dec_rval_t
-SET_OF_decode_uper(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
+SET_OF_decode_uper(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
const asn_per_constraints_t *constraints, void **sptr,
asn_per_data_t *pd) {
asn_dec_rval_t rv;