diff --git a/Sources/JSONAPI/Resource/Transformer.swift b/Sources/JSONAPI/Resource/Transformer.swift
index c7aae56..203b9b5 100644
--- a/Sources/JSONAPI/Resource/Transformer.swift
+++ b/Sources/JSONAPI/Resource/Transformer.swift
@@ -7,12 +7,12 @@
 
 /// A Transformer simply defines a static function that transforms a value.
 public protocol Transformer {
-	associatedtype From
-	associatedtype To
+    associatedtype From
+    associatedtype To
 
     /// Turn value of type `From` into a value of type `To` or
     /// throw an error on failure.
-	static func transform(_ value: From) throws -> To
+    static func transform(_ value: From) throws -> To
 }
 
 /// ReversibleTransformers define a function that reverses the transform
@@ -20,13 +20,13 @@ public protocol Transformer {
 public protocol ReversibleTransformer: Transformer {
     /// Turn a value of type `To` into a value of type `From` or
     /// throw an error on failure.
-	static func reverse(_ value: To) throws -> From
+    static func reverse(_ value: To) throws -> From
 }
 
 /// The IdentityTransformer does not perform any transformation on a value.
 public enum IdentityTransformer<T>: ReversibleTransformer {
-	public static func transform(_ value: T) throws -> T { return value }
-	public static func reverse(_ value: T) throws -> T { return value }
+    public static func transform(_ value: T) throws -> T { return value }
+    public static func reverse(_ value: T) throws -> T { return value }
 }
 
 // MARK: - Validator
@@ -41,16 +41,16 @@ public protocol Validator: ReversibleTransformer where From == To {
 }
 
 extension Validator {
-	public static func reverse(_ value: To) throws -> To {
-		let _ = try transform(value)
-		return value
-	}
+    public static func reverse(_ value: To) throws -> To {
+        let _ = try transform(value)
+        return value
+    }
 
     /// Validate the given value and then return it if valid.
     /// throws an erro if invalid.
     /// - returns: The same value passed in, if it was valid.
-	public static func validate(_ value: To) throws -> To {
-		let _ = try transform(value)
-		return value
-	}
+    public static func validate(_ value: To) throws -> To {
+        let _ = try transform(value)
+        return value
+    }
 }