diff --git a/include/osmocom/gsm/tlv.h b/include/osmocom/gsm/tlv.h
index d0c9552..bb0e8fc 100644
--- a/include/osmocom/gsm/tlv.h
+++ b/include/osmocom/gsm/tlv.h
@@ -457,6 +457,12 @@
 /* take a master (src) tlv def and fill up all empty slots in 'dst' */
 void tlv_def_patch(struct tlv_definition *dst, const struct tlv_definition *src);
 
+int tlv_encode_one(struct msgb *msg, enum tlv_type type, uint8_t tag,
+		   unsigned int len, const uint8_t *val);
+int tlv_encode(struct msgb *msg, const struct tlv_definition *def, const struct tlv_parsed *tp);
+int tlv_encode_ordered(struct msgb *msg, const struct tlv_definition *def, const struct tlv_parsed *tp,
+			const uint8_t *tag_order, unsigned int tag_order_len);
+
 #define TLVP_PRESENT(x, y)	((x)->lv[y].val)
 #define TLVP_LEN(x, y)		(x)->lv[y].len
 #define TLVP_VAL(x, y)		(x)->lv[y].val