diff --git a/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java b/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
index 91f032d86a94a..28bcf3a351177 100644
--- a/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
+++ b/packages/SystemUI/src/com/android/systemui/dagger/DefaultActivityBinder.java
@@ -24,6 +24,8 @@ import com.android.systemui.keyguard.WorkLockActivity;
 import com.android.systemui.screenrecord.ScreenRecordDialog;
 import com.android.systemui.settings.BrightnessDialog;
 import com.android.systemui.tuner.TunerActivity;
+import com.android.systemui.usb.UsbDebuggingActivity;
+import com.android.systemui.usb.UsbDebuggingSecondaryUserActivity;
 
 import dagger.Binds;
 import dagger.Module;
@@ -70,4 +72,17 @@ public abstract class DefaultActivityBinder {
     @IntoMap
     @ClassKey(BubbleOverflowActivity.class)
     public abstract Activity bindBubbleOverflowActivity(BubbleOverflowActivity activity);
+
+    /** Inject into UsbDebuggingActivity. */
+    @Binds
+    @IntoMap
+    @ClassKey(UsbDebuggingActivity.class)
+    public abstract Activity bindUsbDebuggingActivity(UsbDebuggingActivity activity);
+
+    /** Inject into UsbDebuggingSecondaryUserActivity. */
+    @Binds
+    @IntoMap
+    @ClassKey(UsbDebuggingSecondaryUserActivity.class)
+    public abstract Activity bindUsbDebuggingSecondaryUserActivity(
+            UsbDebuggingSecondaryUserActivity activity);
 }
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
index 2973e0aedd436..6e041f6f9ee0f 100644
--- a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingActivity.java
@@ -16,13 +16,19 @@
 
 package com.android.systemui.usb;
 
+import android.app.Activity;
 import android.app.AlertDialog;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.debug.IAdbManager;
+import android.hardware.usb.UsbManager;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.os.ServiceManager;
+import android.os.SystemProperties;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -33,14 +39,25 @@ import android.widget.CheckBox;
 import com.android.internal.app.AlertActivity;
 import com.android.internal.app.AlertController;
 import com.android.systemui.R;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+
+import javax.inject.Inject;
 
 public class UsbDebuggingActivity extends AlertActivity
                                   implements DialogInterface.OnClickListener {
     private static final String TAG = "UsbDebuggingActivity";
 
     private CheckBox mAlwaysAllow;
+    private UsbDisconnectedReceiver mDisconnectedReceiver;
+    private final BroadcastDispatcher mBroadcastDispatcher;
     private String mKey;
 
+    @Inject
+    public UsbDebuggingActivity(BroadcastDispatcher broadcastDispatcher) {
+        super();
+        mBroadcastDispatcher = broadcastDispatcher;
+    }
+
     @Override
     public void onCreate(Bundle icicle) {
         Window window = getWindow();
@@ -50,6 +67,10 @@ public class UsbDebuggingActivity extends AlertActivity
 
         super.onCreate(icicle);
 
+        if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0) {
+            mDisconnectedReceiver = new UsbDisconnectedReceiver(this);
+        }
+
         Intent intent = getIntent();
         String fingerprints = intent.getStringExtra("fingerprints");
         mKey = intent.getStringExtra("key");
@@ -83,6 +104,40 @@ public class UsbDebuggingActivity extends AlertActivity
         super.onWindowAttributesChanged(params);
     }
 
+    private class UsbDisconnectedReceiver extends BroadcastReceiver {
+        private final Activity mActivity;
+        UsbDisconnectedReceiver(Activity activity) {
+            mActivity = activity;
+        }
+
+        @Override
+        public void onReceive(Context content, Intent intent) {
+            String action = intent.getAction();
+            if (!UsbManager.ACTION_USB_STATE.equals(action)) {
+                return;
+            }
+            boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
+            if (!connected) {
+                mActivity.finish();
+            }
+        }
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+        IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_STATE);
+        mBroadcastDispatcher.registerReceiver(mDisconnectedReceiver, filter);
+    }
+
+    @Override
+    protected void onStop() {
+        if (mDisconnectedReceiver != null) {
+            mBroadcastDispatcher.unregisterReceiver(mDisconnectedReceiver);
+        }
+        super.onStop();
+    }
+
     @Override
     public void onClick(DialogInterface dialog, int which) {
         boolean allow = (which == AlertDialog.BUTTON_POSITIVE);
diff --git a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingSecondaryUserActivity.java b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingSecondaryUserActivity.java
index 4214242063705..8d3428a52e3b8 100644
--- a/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingSecondaryUserActivity.java
+++ b/packages/SystemUI/src/com/android/systemui/usb/UsbDebuggingSecondaryUserActivity.java
@@ -16,19 +16,41 @@
 
 package com.android.systemui.usb;
 
+import android.app.Activity;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.hardware.usb.UsbManager;
 import android.os.Bundle;
+import android.os.SystemProperties;
 
 import com.android.internal.app.AlertActivity;
 import com.android.internal.app.AlertController;
 import com.android.systemui.R;
+import com.android.systemui.broadcast.BroadcastDispatcher;
+
+import javax.inject.Inject;
 
 public class UsbDebuggingSecondaryUserActivity extends AlertActivity
         implements DialogInterface.OnClickListener {
+    private UsbDisconnectedReceiver mDisconnectedReceiver;
+    private final BroadcastDispatcher mBroadcastDispatcher;
+
+    @Inject
+    public UsbDebuggingSecondaryUserActivity(BroadcastDispatcher broadcastDispatcher) {
+        mBroadcastDispatcher = broadcastDispatcher;
+    }
+
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
 
+        if (SystemProperties.getInt("service.adb.tcp.port", 0) == 0) {
+            mDisconnectedReceiver = new UsbDisconnectedReceiver(this);
+        }
+
         final AlertController.AlertParams ap = mAlertParams;
         ap.mTitle = getString(R.string.usb_debugging_secondary_user_title);
         ap.mMessage = getString(R.string.usb_debugging_secondary_user_message);
@@ -38,6 +60,40 @@ public class UsbDebuggingSecondaryUserActivity extends AlertActivity
         setupAlert();
     }
 
+    private class UsbDisconnectedReceiver extends BroadcastReceiver {
+        private final Activity mActivity;
+        UsbDisconnectedReceiver(Activity activity) {
+            mActivity = activity;
+        }
+
+        @Override
+        public void onReceive(Context content, Intent intent) {
+            String action = intent.getAction();
+            if (UsbManager.ACTION_USB_STATE.equals(action)) {
+                boolean connected = intent.getBooleanExtra(UsbManager.USB_CONNECTED, false);
+                if (!connected) {
+                    mActivity.finish();
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        IntentFilter filter = new IntentFilter(UsbManager.ACTION_USB_STATE);
+        mBroadcastDispatcher.registerReceiver(mDisconnectedReceiver, filter);
+    }
+
+    @Override
+    protected void onStop() {
+        if (mDisconnectedReceiver != null) {
+            mBroadcastDispatcher.unregisterReceiver(mDisconnectedReceiver);
+        }
+        super.onStop();
+    }
+
     @Override
     public void onClick(DialogInterface dialog, int which) {
         finish();