diff --git a/2021/sketch_2021_06_15b_hex_cells/sketch_2021_06_15b_hex_cells.pyde b/2021/sketch_2021_06_15b_hex_cells/sketch_2021_06_15b_hex_cells.pyde
index c0f7956e..9313f7f1 100644
--- a/2021/sketch_2021_06_15b_hex_cells/sketch_2021_06_15b_hex_cells.pyde
+++ b/2021/sketch_2021_06_15b_hex_cells/sketch_2021_06_15b_hex_cells.pyde
@@ -1,6 +1,3 @@
-# Inspired by an example of hex grid from The Nature of Code example repository
-# by Daniel Shiffman http://natureofcode.com
-
 from cell import Cell
 
 def setup():