diff --git a/tests/bluetooth/host/cs/mocks/hci_core.c b/tests/bluetooth/host/cs/mocks/hci_core.c
index 34ae77164cc..5830c302a47 100644
--- a/tests/bluetooth/host/cs/mocks/hci_core.c
+++ b/tests/bluetooth/host/cs/mocks/hci_core.c
@@ -9,11 +9,5 @@
 #include <zephyr/bluetooth/hci.h>
 #include <zephyr/kernel.h>
 
-#include <host/hci_core.h>
-
-struct bt_dev bt_dev = {
-	.manufacturer = 0x1234,
-};
-
 DEFINE_FAKE_VALUE_FUNC(struct net_buf *, bt_hci_cmd_create, uint16_t, uint8_t);
 DEFINE_FAKE_VALUE_FUNC(int, bt_hci_cmd_send_sync, uint16_t, struct net_buf *, struct net_buf **);