diff --git a/shell/hardware/hardwaremanager.py b/shell/hardware/hardwaremanager.py
index 7230ba3c..631bd7e3 100644
--- a/shell/hardware/hardwaremanager.py
+++ b/shell/hardware/hardwaremanager.py
@@ -36,7 +36,7 @@ class HardwareManager(object):
         self._service = dbus.Interface(proxy, _HARDWARE_MANAGER_INTERFACE)
 
     def set_display_mode(self, mode):
-        self._service.set_mode(mode)
+        self._service.set_display_mode(mode)
 
     def set_display_brightness(self, level):
         self._service.set_display_brightness(level)