diff --git a/java_console/io/src/main/java/com/rusefi/io/AbstractConnectionStateListener.java b/java_console/io/src/main/java/com/rusefi/io/AbstractConnectionStateListener.java
new file mode 100644
index 0000000000..b000d7997f
--- /dev/null
+++ b/java_console/io/src/main/java/com/rusefi/io/AbstractConnectionStateListener.java
@@ -0,0 +1,11 @@
+package com.rusefi.io;
+
+public class AbstractConnectionStateListener implements ConnectionStateListener {
+    @Override
+    public void onConnectionEstablished() {
+    }
+
+    @Override
+    public void onConnectionFailed() {
+    }
+}
diff --git a/java_console/io/src/main/java/com/rusefi/io/ConnectionStateListener.java b/java_console/io/src/main/java/com/rusefi/io/ConnectionStateListener.java
index 7fd440ff3f..50f1adb174 100644
--- a/java_console/io/src/main/java/com/rusefi/io/ConnectionStateListener.java
+++ b/java_console/io/src/main/java/com/rusefi/io/ConnectionStateListener.java
@@ -5,15 +5,7 @@ package com.rusefi.io;
  *         3/1/2017
  */
 public interface ConnectionStateListener {
-    ConnectionStateListener VOID = new ConnectionStateListener() {
-        @Override
-        public void onConnectionEstablished() {
-        }
-
-        @Override
-        public void onConnectionFailed() {
-        }
-    };
+    ConnectionStateListener VOID = new AbstractConnectionStateListener();
 
     /**
      * This method is invoked once we have connection & configuration from controller
diff --git a/java_console/ui/src/main/java/com/rusefi/ui/console/MainFrame.java b/java_console/ui/src/main/java/com/rusefi/ui/console/MainFrame.java
index 66c04eb53d..f4e2462e8e 100644
--- a/java_console/ui/src/main/java/com/rusefi/ui/console/MainFrame.java
+++ b/java_console/ui/src/main/java/com/rusefi/ui/console/MainFrame.java
@@ -48,11 +48,7 @@ public class MainFrame {
         this.consoleUI = consoleUI;
 
         this.tabbedPane = tabbedPane;
-        listener = new ConnectionStateListener() {
-            @Override
-            public void onConnectionFailed() {
-            }
-
+        listener = new AbstractConnectionStateListener() {
             @Override
             public void onConnectionEstablished() {
                 FileLog.MAIN.logLine("onConnectionEstablished");
diff --git a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
index 7e25684d84..f5263676f0 100644
--- a/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
+++ b/java_tools/proxy_server/src/main/java/com/rusefi/proxy/NetworkConnector.java
@@ -4,7 +4,7 @@ import com.devexperts.logging.Logging;
 import com.opensr5.ConfigurationImage;
 import com.rusefi.binaryprotocol.BinaryProtocol;
 import com.rusefi.config.generated.Fields;
-import com.rusefi.io.ConnectionStateListener;
+import com.rusefi.io.AbstractConnectionStateListener;
 import com.rusefi.io.IoStream;
 import com.rusefi.io.LinkManager;
 import com.rusefi.io.commands.HelloCommand;
@@ -32,16 +32,11 @@ public class NetworkConnector {
                 .setNeedPullData(false);
 
         CountDownLatch onConnected = new CountDownLatch(1);
-        controllerConnector.startAndConnect(controllerPort, new ConnectionStateListener() {
+        controllerConnector.startAndConnect(controllerPort, new AbstractConnectionStateListener() {
             @Override
             public void onConnectionEstablished() {
                 onConnected.countDown();
             }
-
-            @Override
-            public void onConnectionFailed() {
-
-            }
         });
 
         log.info("Connecting to controller...");