1 files changed, 4 insertions, 0 deletions
diff --git a/src/mxf.h b/src/mxf.h
index 48a1f64e..c5ecd1b7 100644
--- a/src/mxf.h
+++ b/src/mxf.h
@@ -30,6 +30,10 @@ namespace ASDCP {
 	class AESDecContext;
 }
 
+/* Undefine some stuff that the OS X 10.5 SDK defines */
+#undef Key
+#undef set_key
+
 namespace dcp
 {