diff --git a/screenless/bureau/photography/photography.py b/screenless/bureau/photography/photography.py
index 92e9ea4..a3596b7 100644
--- a/screenless/bureau/photography/photography.py
+++ b/screenless/bureau/photography/photography.py
@@ -33,7 +33,7 @@ class Photography(Bureau):
         
         # set up the gpios for lamp & knobs
         gpio.init()
-        gpio.setcfg(doc_light_pin, gpio.OUTPUT)
+        gpio.setcfg(self.doc_light_pin, gpio.OUTPUT)
 
 
     def _doc_light_on(self):