diff --git a/include/osmocom/ranap/iu_helpers.h b/include/osmocom/ranap/iu_helpers.h
index 109b6da..9d801be 100644
--- a/include/osmocom/ranap/iu_helpers.h
+++ b/include/osmocom/ranap/iu_helpers.h
@@ -3,5 +3,11 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <osmocom/ranap/RANAP_IuTransportAssociation.h>
+#include <osmocom/ranap/RANAP_TransportLayerAddress.h>
+
 int ranap_bcd_decode(char *out, size_t out_len, const uint8_t *in, size_t in_len);
 int ranap_imsi_encode(uint8_t *out, size_t out_len, const char *in);
+int ranap_transp_assoc_decode(uint16_t *port, const RANAP_IuTransportAssociation_t *transp_assoc);
+int ranap_transp_layer_addr_decode(char *addr, unsigned int addr_len,
+				   const RANAP_TransportLayerAddress_t *trasp_layer_addr);