diff --git a/app/src/ble.c b/app/src/ble.c
index fdbde81dabd..c0f7c2ca5c9 100644
--- a/app/src/ble.c
+++ b/app/src/ble.c
@@ -445,9 +445,11 @@ static void connected(struct bt_conn *conn, uint8_t err) {
 
     LOG_DBG("Connected %s", addr);
 
+#if !IS_ENABLED(CONFIG_BT_GATT_AUTO_SEC_REQ)
     if (bt_conn_set_security(conn, BT_SECURITY_L2)) {
         LOG_ERR("Failed to set security");
     }
+#endif // !IS_ENABLED(CONFIG_BT_GATT_AUTO_SEC_REQ)
 
     update_advertising();