diff --git a/docs/usage/schema.md b/docs/usage/schema.md
index d49bb63..9c34196 100644
--- a/docs/usage/schema.md
+++ b/docs/usage/schema.md
@@ -37,7 +37,7 @@ The format of `$ref`s (`"#/definitions/FooBar"` above) can be altered by calling
 with the `ref_template` keyword argument, e.g. `ApplePie.schema(ref_template='/schemas/{model}.json#/')`, here `{model}`
 will be replaced with the model naming using `str.format()`.
 
-## Field customisation
+## Field customization
 
 Optionally, the `Field` function can be used to provide extra information about the field and validations.
 It has the following arguments: