diff --git a/zond/src/main/java/asys/zond/PipeInputStream.java b/zond/src/main/java/asys/zond/PipeInputStream.java
index f09bfdc..635967c 100644
--- a/zond/src/main/java/asys/zond/PipeInputStream.java
+++ b/zond/src/main/java/asys/zond/PipeInputStream.java
@@ -12,6 +12,7 @@ public class PipeInputStream extends InputStream {
     private int lastWritePos = 0,
             lastReadPos = 0,
             wallPos = buffer.length-1;
+    private boolean closed = false;
 
     public synchronized void write(String s) {
         byte[] strBytes = s.getBytes();
@@ -46,6 +47,7 @@ public class PipeInputStream extends InputStream {
                 return 0;
             }
         }
+        if (closed) return 0;
 
         if (lastReadPos == wallPos) {
             lastReadPos = 0;
@@ -68,6 +70,7 @@ public class PipeInputStream extends InputStream {
                 return 0;
             }
         }
+        if (closed) return 0;
         int actualLen = len;
 
         if (lastReadPos > lastWritePos) {
@@ -88,4 +91,14 @@ public class PipeInputStream extends InputStream {
         notify();
         return actualLen;
     }
+
+    public void open() {
+        closed = false;
+    }
+
+    @Override
+    public synchronized void close() {
+        this.closed = true;
+        notify();
+    }
 }
diff --git a/zond/src/main/java/asys/zond/ZondCommandHandler.java b/zond/src/main/java/asys/zond/ZondCommandHandler.java
index 8de0a52..1e74d82 100644
--- a/zond/src/main/java/asys/zond/ZondCommandHandler.java
+++ b/zond/src/main/java/asys/zond/ZondCommandHandler.java
@@ -48,8 +48,9 @@ public class ZondCommandHandler implements CommandHandler {
             Shell.getInstance().shutdown();
         } else if (line.equalsIgnoreCase("start")) {
             if (watchdog == null) {
-                watchdog = new ExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT);
+                watchdog = new ZondExecuteWatchdog(ExecuteWatchdog.INFINITE_TIMEOUT, proxyStdIn);
                 executor.setWatchdog(watchdog);
+
                 Runnable task = () -> {
                     int code = 0;
                     try {
diff --git a/zond/src/main/java/asys/zond/ZondExecuteWatchdog.java b/zond/src/main/java/asys/zond/ZondExecuteWatchdog.java
new file mode 100644
index 0000000..0958d9b
--- /dev/null
+++ b/zond/src/main/java/asys/zond/ZondExecuteWatchdog.java
@@ -0,0 +1,23 @@
+/*
+ * DmitriyMX <dimon550@gmail.com>
+ * 2017-07-19
+ */
+package asys.zond;
+
+import org.apache.commons.exec.ExecuteWatchdog;
+
+public class ZondExecuteWatchdog extends ExecuteWatchdog {
+    private final PipeInputStream inputStream;
+
+    public ZondExecuteWatchdog(long timeout, PipeInputStream inputStream) {
+        super(timeout);
+        this.inputStream = inputStream;
+        inputStream.open();
+    }
+
+    @Override
+    public synchronized void stop() {
+        super.stop();
+        inputStream.close();
+    }
+}