diff --git a/openbsc/include/sccp/sccp.h b/openbsc/include/sccp/sccp.h
index b715497..84ae914 100644
--- a/openbsc/include/sccp/sccp.h
+++ b/openbsc/include/sccp/sccp.h
@@ -151,6 +151,7 @@
 struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause, uint8_t *data, int length);
 struct msgb *sccp_create_cc(struct sccp_source_reference *src_ref, struct sccp_source_reference *dst_ref);
 struct msgb *sccp_create_rlsd(struct sccp_source_reference *src_ref, struct sccp_source_reference *dst_ref, int cause);
+struct msgb *sccp_create_dt1(struct sccp_source_reference *dst_ref, uint8_t *data, uint8_t len);
 
 /**
  * Below this are helper functions and structs for parsing SCCP messages