diff --git a/LEGO1/mxsmack.cpp b/LEGO1/mxsmack.cpp
index 4b87da0e..f0d320da 100644
--- a/LEGO1/mxsmack.cpp
+++ b/LEGO1/mxsmack.cpp
@@ -123,7 +123,6 @@ MxResult MxSmack::LoadHeaderAndTrees(MxU8* p_data, MxSmack* p_mxSmack)
 	return result;
 
 #undef FRAME_COUNT
-#undef HEADER
 }
 
 // FUNCTION: LEGO1 0x100c5d40