diff --git a/openbsc/include/sccp/sccp.h b/openbsc/include/sccp/sccp.h
index 604a2ac..5dfcc31 100644
--- a/openbsc/include/sccp/sccp.h
+++ b/openbsc/include/sccp/sccp.h
@@ -148,6 +148,8 @@
 u_int32_t sccp_src_ref_to_int(struct sccp_source_reference *ref);
 struct sccp_source_reference sccp_src_ref_from_int(u_int32_t);
 
+struct msgb *sccp_create_refuse(struct sccp_source_reference *src_ref, int cause);
+
 /**
  * Below this are helper functions and structs for parsing SCCP messages
  */