diff --git a/tests/libiudummy/iudummy.c b/tests/libiudummy/iudummy.c
index 8efb4fa98..f764253b0 100644
--- a/tests/libiudummy/iudummy.c
+++ b/tests/libiudummy/iudummy.c
@@ -9,6 +9,7 @@ struct msgb;
 struct ue_conn_ctx;
 struct gsm_auth_tuple;
 struct RANAP_Cause;
+struct osmo_sccp_addr;
 
 int iu_tx(struct msgb *msg, uint8_t sapi)
 {