diff --git a/picozero/picozero.py b/picozero/picozero.py
index e03ed01..22c5541 100644
--- a/picozero/picozero.py
+++ b/picozero/picozero.py
@@ -1103,7 +1103,7 @@ def pulse(self, fade_times=1, colors=((0, 0, 0), (1, 0, 0), (0, 0, 0), (0, 1, 0)
         :param float fade_out_time:
             Number of seconds to spend fading out. Defaults to 1.
         :type colors: tuple
-        :param on_color:
+        :param colors:
             Tuple of colours to pulse between in order. Defaults to red, off, green, off, blue, off. 
         :type off_color: ~colorzero.Color or tuple
         :type n: int or None
@@ -1122,7 +1122,7 @@ def cycle(self, fade_times=1, colors=((1, 0, 0), (0, 1, 0), (0, 0, 1)), n=None,
         :param float fade_times:
             Number of seconds to spend fading out. Defaults to 1.
         :type colors: tuple
-        :param on_color:
+        :param colors:
             Tuple of colours to cycle between. Defaults to red, green, blue. 
         :type n: int or None
         :param n: