diff --git a/java_console/autotest/src/main/java/com/rusefi/IoUtil.java b/java_console/autotest/src/main/java/com/rusefi/IoUtil.java
index d6eb5990e8..590d1d0455 100644
--- a/java_console/autotest/src/main/java/com/rusefi/IoUtil.java
+++ b/java_console/autotest/src/main/java/com/rusefi/IoUtil.java
@@ -117,8 +117,11 @@ public class IoUtil {
 
     public static void connectToSimulator(LinkManager linkManager, boolean startProcess) throws InterruptedException {
         if (startProcess) {
-            if (!TcpConnector.getAvailablePorts().isEmpty())
-                throw new IllegalStateException("Port already binded on startup?");
+            if (FileLog.isWindows()) {
+                // this check seems not to work on Linux
+                if (!TcpConnector.getAvailablePorts().isEmpty())
+                    throw new IllegalStateException("Port already binded on startup?");
+            }
             SimulatorExecHelper.startSimulator();
         }
 
diff --git a/java_console/ui/src/main/java/com/rusefi/tools/WriteSimulatorConfiguration.java b/java_console/ui/src/main/java/com/rusefi/tools/WriteSimulatorConfiguration.java
index 92706c5981..55c8dca0b9 100644
--- a/java_console/ui/src/main/java/com/rusefi/tools/WriteSimulatorConfiguration.java
+++ b/java_console/ui/src/main/java/com/rusefi/tools/WriteSimulatorConfiguration.java
@@ -22,7 +22,7 @@ public class WriteSimulatorConfiguration {
         IoUtil.connectToSimulator(linkManager, true);
         BinaryProtocol bp = Objects.requireNonNull(linkManager.getBinaryProtocol(), "getBinaryProtocol");
         ConfigurationImage configuration = bp.getControllerConfiguration();
-        System.out.println("Got " + configuration);
+        System.out.println("Got " + Objects.requireNonNull(configuration, "configuration"));
         IniFileModel ini = new IniFileModel().readIniFile(INI_FILE_FOR_SIMULATOR);
         if (ini == null)
             throw new IllegalStateException("Not found " + INI_FILE_FOR_SIMULATOR);