diff --git a/include/osmocom/pfcp/pfcp_ies_custom.h b/include/osmocom/pfcp/pfcp_ies_custom.h
index c28fdb2..08e62d1 100644
--- a/include/osmocom/pfcp/pfcp_ies_custom.h
+++ b/include/osmocom/pfcp/pfcp_ies_custom.h
@@ -48,6 +48,9 @@ struct osmo_pfcp_ie_node_id {
 	};
 };
 
+int osmo_pfcp_ie_node_id_to_str_buf(char *buf, size_t buflen, const struct osmo_pfcp_ie_node_id *node_id);
+char *osmo_pfcp_ie_node_id_to_str_c(void *ctx, const struct osmo_pfcp_ie_node_id *node_id);
+
 bool osmo_pfcp_bits_get(const uint8_t *bits, unsigned int bitpos);
 void osmo_pfcp_bits_set(uint8_t *bits, unsigned int bitpos, bool val);
 int osmo_pfcp_bits_to_str_buf(char *buf, size_t buflen, const uint8_t *bits, const struct value_string *bit_strs);
diff --git a/src/libosmo-pfcp/pfcp_ies_custom.c b/src/libosmo-pfcp/pfcp_ies_custom.c
index 660a08d..5975a29 100644
--- a/src/libosmo-pfcp/pfcp_ies_custom.c
+++ b/src/libosmo-pfcp/pfcp_ies_custom.c
@@ -317,9 +317,8 @@ int osmo_pfcp_enc_node_id(struct osmo_gtlv_put *tlv, const void *decoded_struct,
 	return 0;
 }
 
-int osmo_pfcp_enc_to_str_node_id(char *buf, size_t buflen, const void *encode_from)
+int osmo_pfcp_ie_node_id_to_str_buf(char *buf, size_t buflen, const struct osmo_pfcp_ie_node_id *node_id)
 {
-	const struct osmo_pfcp_ie_node_id *node_id = encode_from;
 	struct osmo_strbuf sb = { .buf = buf, .len = buflen };
 
 	switch (node_id->type) {
@@ -343,6 +342,16 @@ int osmo_pfcp_enc_to_str_node_id(char *buf, size_t buflen, const void *encode_fr
 	return sb.chars_needed;
 }
 
+char *osmo_pfcp_ie_node_id_to_str_c(void *ctx, const struct osmo_pfcp_ie_node_id *node_id)
+{
+	OSMO_NAME_C_IMPL(ctx, 64, "ERROR", osmo_pfcp_ie_node_id_to_str_buf, node_id)
+}
+
+int osmo_pfcp_enc_to_str_node_id(char *buf, size_t buflen, const void *encode_from)
+{
+	return osmo_pfcp_ie_node_id_to_str_buf(buf, buflen, encode_from);
+}
+
 bool osmo_pfcp_bits_get(const uint8_t *bits, unsigned int bitpos)
 {
 	unsigned int bytenum = bitpos / 8;