diff --git a/CSSLayout/CSSLayout.c b/CSSLayout/CSSLayout.c
index 321adac4..6d6c06d5 100644
--- a/CSSLayout/CSSLayout.c
+++ b/CSSLayout/CSSLayout.c
@@ -91,12 +91,8 @@ typedef struct CSSNode {
 
   struct CSSNode *nextChild;
 
-  CSSSize (*measure)(void *context,
-                     float width,
-                     CSSMeasureMode widthMode,
-                     float height,
-                     CSSMeasureMode heightMode);
-  void (*print)(void *context);
+  CSSMeasureFunc measure;
+  CSSPrintFunc print;
   void *context;
 } CSSNode;