diff --git a/src/shell.c b/src/shell.c
index 324b261..4a66866 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -535,15 +535,18 @@ static void
 on_builtin_monitor_power_mode_changed (PhoshShell *self, GParamSpec *pspec, PhoshMonitor *monitor)
 {
   PhoshMonitorPowerSaveMode mode;
+  PhoshSensorProxyManager *sensor_proxy_manager;
+  gboolean near;
+
+  near = phosh_dbus_sensor_proxy_get_proximity_near (
+    PHOSH_DBUS_SENSOR_PROXY (sensor_proxy_manager));
 
   g_return_if_fail (PHOSH_IS_SHELL (self));
   g_return_if_fail (PHOSH_IS_MONITOR (monitor));
 
   g_object_get (monitor, "power-mode", &mode, NULL);
-#if 0
-  if (mode == PHOSH_MONITOR_POWER_SAVE_MODE_OFF)
+  if (!near && mode == PHOSH_MONITOR_POWER_SAVE_MODE_OFF)
     phosh_shell_lock (self);
-#endif
 
   phosh_shell_set_state (self, PHOSH_STATE_BLANKED, mode == PHOSH_MONITOR_POWER_SAVE_MODE_OFF);
 }