diff --git a/src/s1ap/asn1c/asnGenFiles/DL-NAS-MAC.h b/src/s1ap/asn1c/asnGenFiles/DL-NAS-MAC.h
new file mode 100644
index 0000000..7e892b3
--- /dev/null
+++ b/src/s1ap/asn1c/asnGenFiles/DL-NAS-MAC.h
@@ -0,0 +1,46 @@
+/*
+ * Generated by asn1c-0.9.29 (http://lionet.info/asn1c)
+ * From ASN.1 module "S1AP-IEs"
+ * 	found in "./asn1c/S1AP-IEs.asn"
+ * 	`asn1c -fcompound-names -fno-include-deps -gen-PER -findirect-choice -pdu=S1AP-PDU`
+ */
+
+#ifndef	_DL_NAS_MAC_H_
+#define	_DL_NAS_MAC_H_
+
+
+#include <asn_application.h>
+
+/* Including external dependencies */
+#include <BIT_STRING.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* DL-NAS-MAC */
+typedef BIT_STRING_t	 DL_NAS_MAC_t;
+
+/* Implementation */
+extern asn_per_constraints_t asn_PER_type_DL_NAS_MAC_constr_1;
+extern asn_TYPE_descriptor_t asn_DEF_DL_NAS_MAC;
+asn_struct_free_f DL_NAS_MAC_free;
+asn_struct_print_f DL_NAS_MAC_print;
+asn_constr_check_f DL_NAS_MAC_constraint;
+ber_type_decoder_f DL_NAS_MAC_decode_ber;
+der_type_encoder_f DL_NAS_MAC_encode_der;
+xer_type_decoder_f DL_NAS_MAC_decode_xer;
+xer_type_encoder_f DL_NAS_MAC_encode_xer;
+oer_type_decoder_f DL_NAS_MAC_decode_oer;
+oer_type_encoder_f DL_NAS_MAC_encode_oer;
+per_type_decoder_f DL_NAS_MAC_decode_uper;
+per_type_encoder_f DL_NAS_MAC_encode_uper;
+per_type_decoder_f DL_NAS_MAC_decode_aper;
+per_type_encoder_f DL_NAS_MAC_encode_aper;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* _DL_NAS_MAC_H_ */
+#include <asn_internal.h>