diff --git a/src/tests/test-hnbap.c b/src/tests/test-hnbap.c
index f03a8e6e..6b430af3 100644
--- a/src/tests/test-hnbap.c
+++ b/src/tests/test-hnbap.c
@@ -20,6 +20,7 @@
  */
 
 #include "iu_helpers.h"
+#include "asn1helpers.h"
 
 #include "hnbap_common.h"
 #include "hnbap_ies_defs.h"
@@ -32,6 +33,28 @@
 
 void *talloc_asn1_ctx;
 
+static const unsigned char hnbap_reg_req[] = {
+0x00, 0x01,
+0x00, 0x57, 0x00, 0x00, 0x07, 0x00, 0x03, 0x00,
+0x15, 0x04, 0x80, 0x31, 0x30, 0x30, 0x30, 0x35,
+0x42, 0x39, 0x2d, 0x30, 0x30, 0x31, 0x30, 0x39,
+0x34, 0x32, 0x30, 0x35, 0x30, 0x40, 0x00, 0x08,
+0x00, 0x17, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00,
+0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x11, 0x00, 0x05, 0x00, 0xc0, 0xa8, 0x00,
+0x32, 0x00, 0x09, 0x00, 0x03, 0x09, 0xf1, 0x99,
+0x00, 0x0b, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x06, 0x00, 0x02, 0x40, 0x20, 0x00, 0x07,
+0x00, 0x01, 0x64, 0x00, 0x0a, 0x00, 0x02, 0x00,
+0x01
+};
+
+static const unsigned char hnbap_reg_acc[] = {
+0x20, 0x01,
+0x00, 0x09, 0x00, 0x00, 0x01, 0x00, 0x0e, 0x00,
+0x02, 0x00, 0x00
+};
+
 static const unsigned char hnbap_ue_reg_req[] = {
 0x00, 0x03,
 0x00, 0x1a, 0x00, 0x00, 0x03, 0x00, 0x05, 0x00,
@@ -56,6 +79,7 @@ void test_asn1_decoding(void)
 	InitiatingMessage_t *im;
 	SuccessfulOutcome_t *so;
 	UERegisterRequestIEs_t ies;
+	HNBRegisterRequestIEs_t hnb_ies;
 
 	char imsi[16];
 
@@ -64,6 +88,32 @@ void test_asn1_decoding(void)
 	memset(pdu, 0, sizeof(*pdu));
 	printf("Testing asn.1 HNBAP decoding\n");
 
+	dec_ret = aper_decode(NULL, &asn_DEF_HNBAP_PDU, (void **) &pdu,
+			hnbap_reg_req, sizeof(hnbap_reg_req), 0, 0);
+
+
+	ASSERT(dec_ret.code == RC_OK);
+	ASSERT(pdu->present == HNBAP_PDU_PR_initiatingMessage);
+
+	im = &pdu->choice.initiatingMessage;
+
+	ASSERT(im->procedureCode == ProcedureCode_id_HNBRegister);
+
+	rc = hnbap_decode_hnbregisterrequesties(&hnb_ies, &im->value);
+	ASSERT(rc >= 0);
+
+	uint16_t lac, sac;
+	uint8_t rac;
+	uint32_t cid;
+
+	lac = asn1str_to_u16(&hnb_ies.lac);
+	sac = asn1str_to_u16(&hnb_ies.sac);
+	rac = asn1str_to_u8(&hnb_ies.rac);
+
+	ASSERT(lac == 0x4020);
+	ASSERT(sac == 0x0001);
+	ASSERT(rac == 0x64);
+
 	dec_ret = aper_decode(NULL, &asn_DEF_HNBAP_PDU, (void **) &pdu,
 			hnbap_ue_reg_req, sizeof(hnbap_ue_reg_req), 0, 0);