diff --git a/src/context_map.c b/src/context_map.c
index cd6cd81a..7cfc7e6a 100644
--- a/src/context_map.c
+++ b/src/context_map.c
@@ -76,6 +76,9 @@ context_map_alloc_by_hnb(struct hnb_context *hnb, uint32_t rua_ctx_id,
 		return NULL;
 	}
 
+	LOGP(DMAIN, LOGL_INFO, "Creating new Mapping RUA CTX %p/%u <-> SCU Conn ID %p/%u\n",
+		hnb, rua_ctx_id, cn_if_new, new_scu_conn_id);
+
 	/* alloate a new map entry */
 	map = talloc_zero(hnb, struct hnbgw_context_map);
 	map->state = MAP_S_NULL;
@@ -109,7 +112,7 @@ context_map_by_cn(struct hnbgw_cnlink *cn, uint32_t scu_conn_id)
 	 * direction, as the RUA=SCCP=SUA connections are always
 	 * established from HNB towards CN. */
 	LOGP(DMAIN, LOGL_NOTICE, "Unable to resolve map for CN "
-		"connection ID %u\n", scu_conn_id);
+		"connection ID %p/%u\n", cn, scu_conn_id);
 	return NULL;
 }
 
diff --git a/src/hnbgw_rua.c b/src/hnbgw_rua.c
index 961a5c57..98855534 100644
--- a/src/hnbgw_rua.c
+++ b/src/hnbgw_rua.c
@@ -168,6 +168,11 @@ static int rua_to_scu(struct hnb_context *hnb, struct hnbgw_cnlink *cn,
 	struct hnbgw_context_map *map;
 	int rc;
 
+	if (!cn) {
+		DEBUGP(DRUA, "CN=NULL, discarding message\n");
+		return 0;
+	}
+
 	prim = (struct osmo_scu_prim *) msgb_put(msg, sizeof(*prim));
 	osmo_prim_init(&prim->oph, SCCP_SAP_USER, type, PRIM_OP_REQUEST, msg);
 
diff --git a/src/ranap_common.h b/src/ranap_common.h
index f3791b05..e30ca2a6 100644
--- a/src/ranap_common.h
+++ b/src/ranap_common.h
@@ -590,7 +590,8 @@
 #include <osmocom/core/logging.h>
 #include <osmocom/core/utils.h>
 
-#define RANAP_DEBUG(x, args ...) DEBUGP(0, x, ## args)
+#include "hnbgw.h"
+#define RANAP_DEBUG(x, args ...) DEBUGP(DRANAP, x, ## args)
 
 extern int asn1_xer_print;
 
diff --git a/src/tests/ranap_common_cn.c b/src/tests/ranap_common_cn.c
index 14a192f6..f8b8e6e6 100644
--- a/src/tests/ranap_common_cn.c
+++ b/src/tests/ranap_common_cn.c
@@ -192,6 +192,8 @@ int cn_ranap_rx_co(void *ctx, uint8_t *data, size_t len)
 
 	if (rc == 0)
 		cn_ranap_handle_co(ctx, &message);
+	else
+		LOGP(DRANAP, LOGL_ERROR, "Not calling cn_ranap_handle_co() due to rc=%d\n", rc);
 
 	ASN_STRUCT_FREE(asn_DEF_RANAP_RANAP_PDU, pdu);
 
@@ -325,6 +327,8 @@ int cn_ranap_rx_cl(void *ctx, uint8_t *data, size_t len)
 
 	if (rc == 0)
 		cn_ranap_handle_cl(ctx, &message);
+	else
+		LOGP(DRANAP, LOGL_ERROR, "Not calling cn_ranap_handle_cl() due to rc=%d\n", rc);
 
 	ASN_STRUCT_FREE(asn_DEF_RANAP_RANAP_PDU, pdu);