diff --git a/src/com/android/settings/MainClear.java b/src/com/android/settings/MainClear.java
index 1434d72..ac073b1 100644
--- a/src/com/android/settings/MainClear.java
+++ b/src/com/android/settings/MainClear.java
@@ -26,11 +26,13 @@
 import android.accounts.AuthenticatorDescription;
 import android.app.ActionBar;
 import android.app.Activity;
+import android.app.AlertDialog;
 import android.app.admin.DevicePolicyManager;
 import android.app.settings.SettingsEnums;
 import android.content.ComponentName;
 import android.content.ContentResolver;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
@@ -43,6 +45,7 @@
 import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.os.UserManager;
+import android.os.image.DynamicSystemManager;
 import android.provider.Settings;
 import android.sysprop.VoldProperties;
 import android.telephony.euicc.EuiccManager;
@@ -267,6 +270,19 @@
                 return;
             }
 
+            final DynamicSystemManager dsuManager = (DynamicSystemManager)
+                    getActivity().getSystemService(Context.DYNAMIC_SYSTEM_SERVICE);
+            if (dsuManager.isInUse()) {
+                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
+                builder.setTitle(R.string.dsu_is_running);
+                builder.setPositiveButton(R.string.okay, new DialogInterface.OnClickListener() {
+                    public void onClick(DialogInterface dialog, int id) {}
+                });
+                AlertDialog dsuAlertdialog = builder.create();
+                dsuAlertdialog.show();
+                return;
+            }
+
             if (runKeyguardConfirmation(KEYGUARD_REQUEST)) {
                 return;
             }