diff --git a/test/gatt_client/Makefile b/test/gatt_client/Makefile
index 84b461bc5..60d459652 100644
--- a/test/gatt_client/Makefile
+++ b/test/gatt_client/Makefile
@@ -14,6 +14,7 @@ VPATH += ${BTSTACK_ROOT}/platform/posix
 
 COMMON = \
 	ad_parser.c                 \
+	ancs_client.c               \
 	att_db.c                    \
 	att_dispatch.c              \
 	btstack_linked_list.c       \
diff --git a/test/gatt_client/mock.c b/test/gatt_client/mock.c
index 29c794aef..a90161517 100644
--- a/test/gatt_client/mock.c
+++ b/test/gatt_client/mock.c
@@ -136,6 +136,8 @@ void sm_cmac_signed_write_start(const sm_key_t key, uint8_t opcode, uint16_t att
 int sm_le_device_index(uint16_t handle ){
 	return -1;
 }
+void sm_send_security_request(hci_con_handle_t con_handle){
+}
 
 irk_lookup_state_t sm_identity_resolving_state(hci_con_handle_t con_handle){
 	return IRK_LOOKUP_SUCCEEDED;