diff --git a/tests/db/db_test.c b/tests/db/db_test.c
index a54f11b..a0c1e79 100644
--- a/tests/db/db_test.c
+++ b/tests/db/db_test.c
@@ -22,6 +22,7 @@
 #include <openbsc/db.h>
 #include <openbsc/gsm_subscriber.h>
 #include <openbsc/gsm_04_11.h>
+#include <openbsc/mgcp.h>
 
 #include <osmocom/core/application.h>
 
@@ -261,3 +262,25 @@
 void vlr_loc_update() {}
 void vlr_proc_acc_req() {}
 void vlr_init() {}
+unsigned int mgcpgw_client_next_endpoint(struct mgcpgw_client *client)
+{ return 0; }
+struct msgb *mgcp_msg_crcx(struct mgcpgw_client *mgcp,
+			   uint16_t rtp_endpoint, unsigned int call_id,
+			   enum mgcp_connection_mode mode)
+{ return NULL; }
+struct msgb *mgcp_msg_mdcx(struct mgcpgw_client *mgcp,
+			   uint16_t rtp_endpoint, const char *rtp_conn_addr,
+			   uint16_t rtp_port, enum mgcp_connection_mode mode)
+{ return NULL; }
+int mgcpgw_client_tx(struct mgcpgw_client *mgcp, struct msgb *msg,
+		     mgcp_response_cb_t response_cb, void *priv)
+{ return -EINVAL; }
+const char *mgcpgw_client_remote_addr_str(struct mgcpgw_client *mgcp)
+{ return "0.0.0.0"; }
+uint32_t mgcpgw_client_remote_addr_n(struct mgcpgw_client *mgcp)
+{ return 0; }
+int mgcp_response_parse_params(struct mgcp_response *r)
+{ return -EINVAL; }
+struct RANAP_Cause;
+int iu_tx_release(struct ue_conn_ctx *ctx, const struct RANAP_Cause *cause)
+{ return 0; }