diff --git a/Calendar/epdif.py b/Calendar/epdif.py
index ed82b3b..51624d0 100644
--- a/Calendar/epdif.py
+++ b/Calendar/epdif.py
@@ -16,7 +16,7 @@ def epd_digital_write(pin, value):
     GPIO.output(pin, value)
 
 def epd_digital_read(pin):
-    return GPIO.input(BUSY_PIN)
+    return GPIO.input(pin)
 
 def epd_delay_ms(delaytime):
     time.sleep(delaytime / 1000.0)