gistfile1.txt

diff --git a/src/appkit.cs b/src/appkit.cs
index dbd712f..786a126 100644
--- a/src/appkit.cs
+++ b/src/appkit.cs
@@ -150,8 +150,8 @@ namespace MonoMac.AppKit {
                [Export ("animationDidEnd:"), EventArgs ("NSAnimation")]
                void AnimationDidEnd (NSAnimation animation);
        
-               [Export ("animation:valueForProgress:"), DelegateName ("NSAnimationProgress"), DefaultValue (0.0)]
-               float AnimationProgress (NSAnimation animation, float progress);
+               [Export ("animation:valueForProgress:"), DelegateName ("NSAnimationProgress"), DefaultValue ("progress")]
+               float OnGetCurve (NSAnimation animation, float progress);
        
                [Export ("animation:didReachProgressMark:"), EventArgs ("NSAnimation")]
                void AnimationDidReachProgressMark (NSAnimation animation, float progress);