diff --git a/doc/commerce.md b/doc/commerce.md
index 91664f66d0..123f877c77 100644
--- a/doc/commerce.md
+++ b/doc/commerce.md
@@ -15,4 +15,6 @@ Faker::Commerce.price #=> "44.6"
 # Generate a random promotion code.
 # Optional argument digits = 6 for number of random digits in suffix
 Faker::Commerce.promotion_code #=> "AmazingDeal829102"
+
+Faker::Commerce.material #=> "Plastic"
 ```