diff --git a/config/datatype/types.go b/config/datatype/types.go
index d015707..9bcefbb 100644
--- a/config/datatype/types.go
+++ b/config/datatype/types.go
@@ -4,9 +4,9 @@ package datatype
 // and casts the value into a compatible type
 type Validator func(value interface{}) (cast interface{}, valid bool)
 
-// Builder builds a DataType from the type definition (from the
+// DataType builds a DataType from the type definition (from the
 // configuration field "type") and returns NIL if the type
 // definition does not match this DataType
-type Builder interface {
+type DataType interface {
 	Build(typeDefinition string) Validator
 }