diff --git a/lib/parallelIO/IldgIOtypes.h b/lib/parallelIO/IldgIOtypes.h
index 5b397e14..aa909002 100644
--- a/lib/parallelIO/IldgIOtypes.h
+++ b/lib/parallelIO/IldgIOtypes.h
@@ -32,7 +32,7 @@ extern "C" { // for linkage
 #include "lime.h"
 }
 
-namespace Grid {
+NAMESPACE_BEGIN(Grid);
 
 /////////////////////////////////////////////////////////////////////////////////
 // Data representation of records that enter ILDG and SciDac formats
@@ -231,6 +231,6 @@ struct usqcdPropInfo : Serializable {
 };
 #endif
 
-}
+NAMESPACE_END(Grid);
 #endif
 #endif