diff --git a/skeletons/NativeInteger.c b/skeletons/NativeInteger.c
index d5c0279..fd68615 100644
--- a/skeletons/NativeInteger.c
+++ b/skeletons/NativeInteger.c
@@ -62,8 +62,9 @@
 NativeInteger_decode_ber(asn_codec_ctx_t *opt_codec_ctx,
 	asn_TYPE_descriptor_t *td,
 	void **nint_ptr, const void *buf_ptr, size_t size, int tag_mode) {
-	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	long *native = (long *)*nint_ptr;
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    long *native = (long *)*nint_ptr;
 	asn_dec_rval_t rval;
 	ber_tlv_len_t length;
 
@@ -184,8 +185,9 @@
 NativeInteger_decode_xer(asn_codec_ctx_t *opt_codec_ctx,
 	asn_TYPE_descriptor_t *td, void **sptr, const char *opt_mname,
 		const void *buf_ptr, size_t size) {
-	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	asn_dec_rval_t rval;
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    asn_dec_rval_t rval;
 	INTEGER_t st;
 	void *st_ptr = (void *)&st;
 	long *native = (long *)*sptr;
@@ -225,8 +227,9 @@
 NativeInteger_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
 	int ilevel, enum xer_encoder_flags_e flags,
 		asn_app_consume_bytes_f *cb, void *app_key) {
-	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	char scratch[32];	/* Enough for 64-bit int */
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    char scratch[32];	/* Enough for 64-bit int */
 	asn_enc_rval_t er;
 	const long *native = (const long *)sptr;
 
@@ -252,8 +255,9 @@
                           asn_TYPE_descriptor_t *td,
                           const asn_per_constraints_t *constraints, void **sptr,
                           asn_per_data_t *pd) {
-    asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	asn_dec_rval_t rval;
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    asn_dec_rval_t rval;
 	long *native = (long *)*sptr;
 	INTEGER_t tmpint;
 	void *tmpintptr = &tmpint;
@@ -287,8 +291,9 @@
 NativeInteger_encode_uper(asn_TYPE_descriptor_t *td,
                           const asn_per_constraints_t *constraints, void *sptr,
                           asn_per_outp_t *po) {
-    asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	asn_enc_rval_t er;
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    asn_enc_rval_t er;
 	long native;
 	INTEGER_t tmpint;
 
@@ -316,8 +321,9 @@
 int
 NativeInteger_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
 	asn_app_consume_bytes_f *cb, void *app_key) {
-	asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
-	const long *native = (const long *)sptr;
+    const asn_INTEGER_specifics_t *specs =
+        (const asn_INTEGER_specifics_t *)td->specifics;
+    const long *native = (const long *)sptr;
 	char scratch[32];	/* Enough for 64-bit int */
 	int ret;