diff --git a/YogaKit/Source/YGLayoutExtensions.swift b/YogaKit/Source/YGLayoutExtensions.swift
index 812f845524..2157c0ffbc 100644
--- a/YogaKit/Source/YGLayoutExtensions.swift
+++ b/YogaKit/Source/YGLayoutExtensions.swift
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+import yoga;
 postfix operator %
 
 extension Int {
@@ -29,15 +30,15 @@ extension YGValue : ExpressibleByIntegerLiteral, ExpressibleByFloatLiteral {
     public init(integerLiteral value: Int) {
         self = YGValue(value: Float(value), unit: .point)
     }
-	
+
     public init(floatLiteral value: Float) {
         self = YGValue(value: value, unit: .point)
     }
-  
+
     public init(_ value: Float) {
         self = YGValue(value: value, unit: .point)
     }
-  
+
     public init(_ value: CGFloat) {
         self = YGValue(value: Float(value), unit: .point)
     }