diff --git a/QuartzCore/CATransform3D.h b/QuartzCore/CATransform3D.h
index 571930e5..8d6ca8aa 100644
--- a/QuartzCore/CATransform3D.h
+++ b/QuartzCore/CATransform3D.h
@@ -8,5 +8,5 @@ typedef struct {
    CGFloat m41,m42,m43,m44;
 } CATransform3D;
 
-const CATransform3D CATransform3DIdentity;
+CA_EXPORT const CATransform3D CATransform3DIdentity;
 
diff --git a/QuartzCore/CATransform3D.m b/QuartzCore/CATransform3D.m
index e69de29b..3991adfe 100644
--- a/QuartzCore/CATransform3D.m
+++ b/QuartzCore/CATransform3D.m
@@ -0,0 +1,3 @@
+#import <QuartzCore/CATransform3D.h>
+
+const CATransform3D CATransform3DIdentity = {1, 0, 0, 0,  0, 1, 0, 0,  0, 0, 1, 0,  0, 0, 0, 1};
\ No newline at end of file