diff --git a/leds.py b/leds.py
index ce5cbb6..0208710 100644
--- a/leds.py
+++ b/leds.py
@@ -254,7 +254,7 @@ class LightStrip:
 
         self.np = neopixel.NeoPixel(data_pin, string_length, brightness = brightness, auto_write=False, pixel_order = pixel_order)
         self.pattern = defaultPattern
-        self.tick = 0
+        self.cur_tick = 0
 
   def set_light_level(self, level):
     self.np.brightness = level
@@ -263,13 +263,13 @@ class LightStrip:
   
   def tick(self):
     np = self.np
-    t = self.tick
+    t = self.cur_tick
     n = np.n
     for i in range(n):
       col = self.pattern(i, t)
       if np[i] != col:
         np[i] = col
-    self.tick = t + 1
+    self.cur_tick = t + 1
 
 debug_statements = True