diff --git a/components/free_rtos/ethernet_ip/eth_udp_server.hpp b/components/free_rtos/ethernet_ip/eth_udp_server.hpp
index a04d2ce..b4ce098 100644
--- a/components/free_rtos/ethernet_ip/eth_udp_server.hpp
+++ b/components/free_rtos/ethernet_ip/eth_udp_server.hpp
@@ -30,7 +30,7 @@ public:
 
     virtual uint32_t Sender(uint8_t * p_data, size_t scatter_segment) override;
 
-    int32_t select(uint32_t ticks = SystemP_WAIT_FOREVER)
+    virtual int32_t select(uint32_t ticks = SystemP_WAIT_FOREVER) override
     {
         return rx_sem_.pend(ticks);
     }
diff --git a/components/free_rtos/ethernet_ip/eth_udp_server_iface.hpp b/components/free_rtos/ethernet_ip/eth_udp_server_iface.hpp
index 6daf92c..11b3a2b 100644
--- a/components/free_rtos/ethernet_ip/eth_udp_server_iface.hpp
+++ b/components/free_rtos/ethernet_ip/eth_udp_server_iface.hpp
@@ -1,7 +1,7 @@
 /*
  * eth_udp_server_iface.hpp
  *
- *  Created on: 15 ìàð. 2023 ã.
+ *  Created on: 15 ���. 2023 �.
  *      Author: sychev
  */
 
@@ -19,6 +19,7 @@ namespace free_rtos {
 class EthUdpServerIface {
 public:
     virtual std::shared_ptr<EthUpdClient> createClient(uint16_t port_dst, uint16_t port_src, bool use_chksum) = 0;
+    virtual int32_t select(uint32_t ticks = SystemP_WAIT_FOREVER) = 0;
 
     virtual ~EthUdpServerIface() {};
 };