diff --git a/freepost/random.py b/freepost/random.py
index 4f3a3fa..7d9eba8 100644
--- a/freepost/random.py
+++ b/freepost/random.py
@@ -3,7 +3,7 @@
 # security tokens, and related secrets.
 # In particularly, secrets should be used in preference to the default
 # pseudo-random number generator in the random module, which is designed for
-# modelling and simulation, not security or cryptography.
+# modeling and simulation, not security or cryptography.
 # 
 # Requires Python 3.6+
 # import secrets