diff --git a/screensaver.py b/screensaver.py
index ad89bac..6a75286 100644
--- a/screensaver.py
+++ b/screensaver.py
@@ -21,8 +21,8 @@
          args_on=['CECActivateSource']),
     dict(name='no-signal-rpi', title='No Signal on Raspberry Pi (using vcgencmd)',
          function='run_command',
-         args_off=['vcgencmd', 'display_power', '0'],
-         args_on=['vcgencmd', 'display_power', '1']),
+         args_off=['/opt/vc/bin/vcgencmd', 'display_power', '0'],
+         args_on=['/opt/vc/bin/vcgencmd', 'display_power', '1']),
     dict(name='dpms-builtin', title='DPMS (built-in)',
          function='run_builtin',
          args_off=['ToggleDPMS'],