diff --git a/core/java/android/app/admin/DevicePolicyManager.java b/core/java/android/app/admin/DevicePolicyManager.java
index e23ffe412d4a2..245db06d164f7 100644
--- a/core/java/android/app/admin/DevicePolicyManager.java
+++ b/core/java/android/app/admin/DevicePolicyManager.java
@@ -3562,6 +3562,9 @@ public class DevicePolicyManager {
      * Changing this setting has not effect as of {@link android.os.Build.VERSION_CODES#MNC}. Use
      * {@link android.net.wifi.WifiManager#setWifiEnabled(boolean)} instead.</li>
      * <li>{@link Settings.Global#WIFI_SLEEP_POLICY}</li>
+     * <li>{@link Settings.Global#STAY_ON_WHILE_PLUGGED_IN}
+     * This setting is only available from {@link android.os.Build.VERSION_CODES#MNC} onwards
+     * and can only be set if {@link #setMaximumTimeToLock} is not used to set a timeout.</li>
      * </ul>
      *
      * @param admin Which {@link DeviceAdminReceiver} this request is associated with.
diff --git a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
index 00d7971ce9591..365a67a87a745 100644
--- a/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
+++ b/services/devicepolicy/java/com/android/server/devicepolicy/DevicePolicyManagerService.java
@@ -211,6 +211,7 @@ public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
         GLOBAL_SETTINGS_WHITELIST.add(Settings.Global.NETWORK_PREFERENCE);
         GLOBAL_SETTINGS_WHITELIST.add(Settings.Global.USB_MASS_STORAGE_ENABLED);
         GLOBAL_SETTINGS_WHITELIST.add(Settings.Global.WIFI_SLEEP_POLICY);
+        GLOBAL_SETTINGS_WHITELIST.add(Settings.Global.STAY_ON_WHILE_PLUGGED_IN);
     }
 
     final Context mContext;
@@ -5437,6 +5438,14 @@ public class DevicePolicyManagerService extends IDevicePolicyManager.Stub {
                 }
             }
 
+            if (Settings.Global.STAY_ON_WHILE_PLUGGED_IN.equals(setting)) {
+                // ignore if it contradicts an existing policy
+                long timeMs = getMaximumTimeToLock(who, UserHandle.getCallingUserId());
+                if (timeMs > 0 && timeMs < Integer.MAX_VALUE) {
+                    return;
+                }
+            }
+
             long id = Binder.clearCallingIdentity();
             try {
                 Settings.Global.putString(contentResolver, setting, value);