diff --git a/README.md b/README.md
index 72a53dd..253316b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Christmas tree
 
-Scheduler for our christmas tree lights. Uses PiFace and [schedule](https://github.com/dbader/schedule).
+Scheduler for our christmas tree lights. Uses [PiFace](http://www.piface.org.uk/).
 
 Use `tmux` or `supervisor` to run `xmas.py`
 
diff --git a/xmas.py b/xmas.py
index 3c5c839..3dae899 100644
--- a/xmas.py
+++ b/xmas.py
@@ -1,8 +1,11 @@
-import schedule
 import time
 import datetime
 import pifacedigitalio as p
 
+# Configures interval
+START = datetime.time(17, 0, 0)
+END = datetime.time(23, 59, 0)
+
 TREE = """
            *             ,
                        _/^\_
@@ -20,9 +23,9 @@ TREE = """
      *          /`,@ ;+& () o*`;-';\    *
                (`""--.,_0 +% @' &()\   *
                /-.,_    ``''--....-'`)  *
-          *    /@%;o`:;'--,.__   __.'\ 
+          *    /@%;o`:;'--,.__   __.'\
               ;*,&(); @ % &^;~`"`o;@();         *
-              /(); o^~; & ().o@*&`;&%O\  
+              /(); o^~; & ().o@*&`;&%O\
         jgs   `"="==""==,,,.,="=="==="`
            __.----.(\-''#####---...___...-----._
          '`         \)_`'''''`
@@ -31,23 +34,31 @@ TREE = """
                  `'''` `
 """
 
-START = datetime.time(17, 0, 0)
-END = datetime.time(23, 59, 0)
 
 def timestamp():
+    """ Get a timestamp """
     return datetime.datetime.now()
 
 
 def turn_on():
     """ Turn on the christmas tree """
     print("{} ON".format(timestamp()))
-    p.digital_write(0, 1) 
+    p.digital_write(0, 1)
 
 
 def turn_off():
     """ Turn off the christmas tree """
     print("{} OFF".format(timestamp()))
-    p.digital_write(0, 0) 
+    p.digital_write(0, 0)
+
+
+def update():
+    """ Updates the state """
+    now = datetime.datetime.now().time()
+    if START <= now <= END:
+        turn_on()
+    else:
+        turn_off()
 
 
 def check_connectivity():
@@ -60,12 +71,6 @@ def check_connectivity():
         time.sleep(2)
 
 
-    # Turn on if we are in the correct interval
-    now = datetime.datetime.now().time()
-    if START <= now <= END:
-        turn_on()
-
-
 if __name__ == "__main__":
     # Connect to PiFace
     print(TREE)
@@ -77,13 +82,10 @@ if __name__ == "__main__":
     # Message
     print()
     print("Starting scheduler:")
-    print("Xmas enabled between {} and {}.".format(START.strftime("%H:%M"), END.strftime("%H:%M")))
-
-    # Set up the schedule
-    schedule.every().day.at(START.strftime("%H:%M")).do(turn_on)
-    schedule.every().day.at(END.strftime("%H:%M")).do(turn_off)
+    print("Xmas enabled between {} and {}.".format(
+        START.strftime("%H:%M"), END.strftime("%H:%M")))
 
     # Run the event loop
-    while(True):
-        schedule.run_pending()
-        time.sleep(1)
+    while (True):
+        update()
+        time.sleep(60)