diff --git a/demo/java/com/android/microdroid/demo/MainActivity.java b/demo/java/com/android/microdroid/demo/MainActivity.java
index f27b23b..906d18e 100644
--- a/demo/java/com/android/microdroid/demo/MainActivity.java
+++ b/demo/java/com/android/microdroid/demo/MainActivity.java
@@ -76,8 +76,10 @@
                         model.stop();
                     } else {
                         CheckBox debugModeCheckBox = findViewById(R.id.debugMode);
+                        CheckBox protectedModeCheckBox = findViewById(R.id.protectedMode);
                         final boolean debug = debugModeCheckBox.isChecked();
-                        model.run(debug);
+                        final boolean protectedVm = protectedModeCheckBox.isChecked();
+                        model.run(debug, protectedVm);
                     }
                 });
 
@@ -157,7 +159,7 @@
         }
 
         /** Runs a VM */
-        public void run(boolean debug) {
+        public void run(boolean debug, boolean protectedVm) {
             // Create a VM and run it.
             mExecutorService = Executors.newFixedThreadPool(4);
 
@@ -243,7 +245,8 @@
                 VirtualMachineConfig.Builder builder =
                         new VirtualMachineConfig.Builder(getApplication());
                 builder.setPayloadBinaryName("MicrodroidTestNativeLib.so");
-                builder.setProtectedVm(true);
+                builder.setProtectedVm(protectedVm);
+
                 if (debug) {
                     builder.setDebugLevel(VirtualMachineConfig.DEBUG_LEVEL_FULL);
                     builder.setVmOutputCaptured(true);
diff --git a/demo/res/layout/activity_main.xml b/demo/res/layout/activity_main.xml
index f0e35d6..baa7b1f 100644
--- a/demo/res/layout/activity_main.xml
+++ b/demo/res/layout/activity_main.xml
@@ -31,6 +31,13 @@
                 android:layout_height="wrap_content"
                 android:layout_weight="1"
                 android:text="Debug mode" />
+
+            <CheckBox
+                android:id="@+id/protectedMode"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="Protected vm" />
         </LinearLayout>
 
         <TextView